Sadhana
SādhanaसाधनPracticeSpiritual practice — the regular, disciplined practice of one's chosen spiritual discipline, whether japa, meditation, puja, asana, pranayama, study, or service. Sadhana is distinguished from occasional practice by its regularity and commitment: it happens every day, regardless of mood or circumstance. The accumulation of sadhana over years is the foundation of spiritual development; individual practices have their effect through repetition and consistency rather than through any single dramatic experience.
Saguna
saguṇaसगुणPhilosophyWith qualities or attributes; the aspect of Brahman conceived as a personal God with divine qualities (omniscience, omnipotence, grace). Saguna Brahman is the object of devotional worship in theistic Vedanta schools.
Sahaja Samadhi
sahaja samādhiसहज समाधिYogaNatural or spontaneous absorption; a state of continuous samadhi that persists during all activities of daily life. Unlike nirvikalpa samadhi (which withdraws from activity), sahaja samadhi is the natural state of the fully realized being who remains in non-dual awareness while engaging normally with the world.
Samadhana
samādhānaसमाधानPhilosophyMental equanimity or one-pointed focus; one of the six virtues (shat sampat) in Vedanta. Samadhana is the ability to keep the mind steadily fixed on the goal of liberation without being distracted by worldly concerns or sense objects.
Samadhi
SamādhiसमाधिYogaThe highest state of meditation — absorption or complete union of the meditator, the act of meditation, and the object of meditation. Patanjali describes a spectrum of samadhi states from Savikalpa (with form/thought) to Nirvikalpa (formless/thoughtless) to the final liberation of Kaivalya. In Advaita Vedanta, Samadhi is the direct recognition of Brahman — not a temporary state but the recognition of what has always been the case. In popular usage, samadhi also refers to the death of a saint.
Samapatti
samāpattiसमापत्तिYogaCognitive absorption; in Patanjali's Yoga Sutras, samapatti refers to the state of samadhi in which the mind becomes clear as crystal and takes on the form of the object of meditation. There are four stages: with and without reasoning (savitarka/nirvitarka), and with and without reflection (savichara/nirvichara).
Samhita
saṃhitāसंहिताScriptureA collection or compilation; specifically refers to the metrical hymn collections that form the earliest layer of each Veda (Rigveda Samhita, Samaveda Samhita, etc.). Also used for other important scriptural collections like the Charaka Samhita (Ayurveda).
Samsara
SaṃsāraसंसारPhilosophyThe cycle of birth, death, and rebirth — the stream of conditioned existence in which the Jiva (individual soul) is carried from life to life by the force of karma and the attachment of desire. Samsara is not understood as punishment but as the natural consequence of identifying with the body-mind rather than with the Atman. The goal of all Hindu spiritual paths is Moksha — liberation from the cycle of samsara and the recognition of one's true nature as the changeless Atman.
Samskara
Saṃskāraसंस्कारEthicsBoth the sixteen sacred rites of passage (from conception through death) and the mental impressions or tendencies created by past actions and experiences. As rites of passage, samskaras mark and sanctify the major transitions of human life: Garbhadhana (conception), Namakarana (naming), Upanayana (sacred thread), Vivaha (marriage), and Antyesti (funeral rites). As mental impressions, samskaras are the grooves worn by repeated thoughts and actions that shape the character and future choices of the individual.
Samudra Manthan
samudramanthanaसमुद्रमन्थनCosmologyThe churning of the cosmic ocean; the mythological event in which gods (devas) and demons (asuras) used Mount Mandara as a churning rod and Vasuki the serpent as a rope to churn the cosmic ocean, producing the divine nectar amrita, Lakshmi, Dhanvantari, and many other treasures.
Sandhyavandana
sandhyāvandanaसन्ध्यावन्दनPracticeThe twilight prayer ritual performed at dawn, noon, and dusk by twice-born Hindus. Includes achamana (sipping water), pranayama, arghya (water offering to the sun), and japa of the Gayatri Mantra. Considered a fundamental daily duty (nitya karma).
Sankalpa
saṅkalpaसङ्कल्पRitualA solemn vow or resolve; the formal statement of intention made before any ritual or spiritual practice. The sankalpa names the performer, time, place, and purpose, aligning individual will with cosmic order (rita). It transforms ordinary action into sacred purpose.
Sannyasa
Sannyāsaसंन्यासEthicsRenunciation — the fourth and final stage of the ashrama system, in which the individual formally renounces all worldly roles and possessions to devote themselves entirely to the pursuit of liberation. The sannyasi (renunciate) gives up family, property, caste identity, and social role, adopts the ochre robe and staff, and lives by begging. Sannyasa is understood as the highest stage of human development — not escapism but the completion of the full arc of engaged life.
Santosh
santoṣaसंतोषEthicsContentment; one of the five niyamas (observances) in Patanjali's Yoga. Santosha is the cultivation of contentment with what one has, free from craving for more. The Yoga Sutras state that from contentment comes unsurpassed happiness.
Saraswati
Sarasvatīसरस्वतीDeityThe goddess of learning, wisdom, music, and all the arts — one of the three great goddesses of Hinduism (Tridevi) alongside Lakshmi and Parvati/Durga. Saraswati is depicted in white, seated on a lotus or swan, holding a veena and a book. She is worshipped by students, teachers, musicians, artists, and scholars. The Rigveda's Saraswati was originally a sacred river deity whose waters were associated with purification and eloquence; over time this became the goddess of the river of knowledge.
Sat
Satसत्PhilosophyBeing or existence — the first of the three essential qualities of Brahman (Sat-Chit-Ananda). Sat is not mere existence (a rock exists) but self-luminous, uncaused, indestructible being — the existence that cannot not-be, the ground from which all existence derives. The Chandogya Upanishad (6.2.1) opens: 'In the beginning there was Sat alone, one without a second.' The Atman partakes of Sat by virtue of being Brahman — it is the one thing in the individual that cannot be negated.
Sattva
Sattvaसत्त्वPhilosophyThe quality of purity, clarity, and harmony — the highest of the three gunas. Sattva promotes clear perception, equanimity, and the capacity for meditation. Sattvic food is fresh, light, and nourishing; sattvic environments are clean, quiet, and peaceful; sattvic qualities include honesty, kindness, and wisdom. Spiritual practice aims to increase sattva (relative to rajas and tamas) as a preparation for transcending all three gunas in liberation.
Satya
Satyaसत्यEthicsTruth — the second of the five Yamas in Patanjali's Yoga Sutras, and one of the most fundamental values in the Hindu tradition. Satya means not only factual truthfulness but the alignment of thought, speech, and action with what is real. The Mahabharata repeatedly declares: 'Satyam eva jayate' — truth alone triumphs. Gandhi's concept of 'Satyagraha' (truth-force) is rooted in the conviction that satya is the ultimate power in the universe.
Seva
sevāसेवाEthicsSelfless service; the act of serving others as a form of worship and spiritual practice. Seva is a fundamental principle in Hinduism, particularly in the Bhakti and Karma Yoga traditions, where serving humans is considered equivalent to serving the divine.
Shabda
śabdaशब्दPhilosophySound or word; also refers to scriptural testimony as a valid source of knowledge (pramana). Shabda Brahman is Brahman in the form of sacred sound, particularly the primordial vibration Om from which creation arises.
Shakti
Śaktiशक्तिPhilosophyPower, energy, or the dynamic feminine principle of the universe — the creative force that animates all existence. In Shaiva Siddhanta, Shakti is Shiva's power, inseparable from him: Shiva without Shakti is shava (a corpse); Shakti without Shiva has no direction. In the Shakta tradition, the Great Goddess (Mahadevi) is understood as the supreme reality — Shakti is not a secondary principle but the primary one, the source from which even Brahman draws its power of manifestation.
Shakti Pat
śaktipātaशक्तिपातYogaDescent of divine energy; the transmission of spiritual energy from a guru to a disciple, spontaneously awakening kundalini or accelerating spiritual evolution. Can occur through touch, glance, word, thought, or even proximity to a realized master.
Shama
śamaशमPhilosophyInner tranquility or calmness of mind; one of the six virtues (shat sampat) required of a Vedanta student. Shama refers to the inner quietude achieved by turning the mind away from sense objects toward the Self, as opposed to dama (outer restraint of senses).
Shani
śaniशनिDeityThe deity of Saturn; one of the Navagrahas and son of Surya. Shani is associated with justice, discipline, karma, and the consequences of past actions. His transit (sade sati) lasting seven and a half years is considered a period of karmic testing.
Shat Sampat
ṣaṭsampatषट्सम्पत्PhilosophyThe six-fold wealth or virtues required of a sincere Vedanta student: shama (tranquility), dama (self-restraint), uparati (withdrawal), titiksha (forbearance), shraddha (faith), and samadhana (concentration). These prepare the mind for receiving knowledge of Brahman.
Shatkarma
ṣaṭkarmaषट्कर्मPracticeThe six cleansing practices of Hatha Yoga: neti (nasal cleansing), dhauti (digestive tract cleansing), nauli (abdominal churning), basti (colon cleansing), kapalbhati (skull-shining breath), and trataka (concentrated gazing). They purify the body before advanced pranayama and meditation.
Shaucha
śaucaशौचEthicsPurity or cleanliness; one of the five niyamas in Patanjali's Yoga. Shaucha encompasses both external purity (of body and environment) and internal purity (of thought, speech, and mind). The Yoga Sutras describe the fruits of shaucha as indifference to sensory pleasures.
Shishya
Śiṣyaशिष्यPracticeStudent or disciple — the one who has entered into the guru-shishya relationship of traditional transmission. The shishya is not merely a student in the academic sense but one who has committed to receiving the guru's guidance in the most complete sense: placing their spiritual development in the guru's hands, following the guru's instructions regardless of personal preference, and maintaining the relationship until liberation or the guru's release of the student.
Shiva
ŚivaशिवDeityThe auspicious one — one of the three primary deities of Hinduism (Trimurti), the deity of dissolution, transformation, and transcendence. Shiva is the Mahayogi (great ascetic) meditating in the Himalayas and the Nataraja (lord of dance) whose dance creates and dissolves the universe. He is simultaneously the most terrifying (Rudra, the howler) and the most compassionate (Ashutosh, easily pleased) of the gods. Shiva's iconography — the trident, crescent moon, Ganga, serpent, bull Nandi, and linga — is among the richest in Hindu tradition.
Shloka
Ślokaश्लोकScriptureA verse in Sanskrit poetry — specifically the anushtubh meter (eight syllables per quarter, four quarters per verse) that is the most common verse form in Sanskrit literature, used throughout the Mahabharata, Ramayana, and Puranas. The word shloka is said to have originated with Valmiki's lament over the killing of a bird by a hunter — the first shloka of Sanskrit poetry, arising from grief (shoka). More generally, shloka refers to any Vedic or Sanskrit verse.
Shodasha Samskara
ṣoḍaśasaṃskāraषोडशसंस्कारRitualThe sixteen rites of passage that sanctify the major transitions of Hindu life from conception to death: from garbhadhana (conception) through birth rites, childhood rites, upanayana (sacred thread), vivaha (marriage), to antyesti (funeral rites). They transform ordinary biological events into sacred occasions.
Shraddha
śraddhāश्रद्धाPhilosophyFaith, trust, and earnest conviction; one of the six virtues (shat sampat) in Vedanta. Shraddha is not blind belief but a trusting openness to the teachings of scripture and guru based on reason and experience. The Bhagavad Gita says a person's nature is shaped by their shraddha.
Shunyata
śūnyatāशून्यताPhilosophyEmptiness or voidness; a central concept in Mahayana Buddhism describing the absence of inherent self-existence in all phenomena. Distinguished from the Vedantic concept of Brahman as the positive ground of all being.
Sita
SītāसीताDeityThe daughter of the earth goddess Bhumi, raised by King Janaka, and devoted wife of Rama — one of the most beloved figures in the Hindu tradition. Sita is the embodiment of feminine steadfastness, spiritual power, and quiet strength. Her abduction by Ravana and her trials in Lanka, endured with unbroken faith and dignity, make her the tradition's supreme example of what the Ramayana calls 'patient endurance as spiritual power.' In Vaishnava theology, Sita is a form of Lakshmi, Rama's divine consort.
Skanda
skandaस्कन्दDeityAnother name for Kartikeya, the god of war; also the divine commander (Senapati) of the gods' army. Skanda is worshipped extensively in South India as Murugan and in Sri Lanka, where he is considered the patron deity.
Spanda
spandaस्पन्दPhilosophyDivine vibration or pulsation; a key concept in Kashmir Shaivism describing the dynamic, creative throb of universal consciousness through which Shiva manifests the universe. The Spanda Karikas is an important text on this doctrine.
Stotra
stotraस्तोत्रScriptureA hymn of praise; devotional poetry composed in honor of a deity. Great stotras like Shankaracharya's Soundarya Lahari and Bhuja Bala Stava are considered both sacred literature and spiritual practice. Recitation of stotras is a major form of bhakti.
Surya
Sūryaसूर्यDeityThe sun deity — one of the Adityas (solar deities) and one of the five primary deities of Smarta Hinduism (the Panchayatana). Surya is the visible form of Brahman, the light that makes all perception possible. The Gayatri Mantra is addressed to Surya as Savitri (the vivifying sun). Surya worship includes the arghya (water offering to the rising sun) practiced daily in Sandhyavandanam, the Surya Namaskar (twelve-posture solar salutation), and the festivals of Makar Sankranti, Pongal, and Chhath Puja.
Surya Namaskar
sūryanamaskāraसूर्यनमस्कारYogaSun salutation; a sequence of twelve yoga postures performed in a flowing series as a salutation to the sun. Each position is accompanied by a specific breath and a mantra honoring the sun. Surya Namaskar is a complete practice integrating asana, pranayama, and devotion.
Sushumna
suṣumnāसुषुम्नाYogaThe central energy channel; the most important of the 72,000 nadis, running through the spinal column from the muladhara chakra at the base to the sahasrara chakra at the crown. When kundalini shakti awakens and rises through the sushumna, it pierces each chakra, leading to higher states of consciousness.
Sutra
sūtraसूत्रScriptureA thread or aphorism; a terse, compressed statement of principle. Major sutra texts include the Brahma Sutras (Vedanta), Yoga Sutras (Patanjali), and Mimamsa Sutras. Each sutra requires extensive commentary (bhashya) to be understood.
Svadharma
svadharmaस्वधर्मEthicsOne's own duty; the specific dharma appropriate to an individual's nature, stage of life, and social role. The Bhagavad Gita famously teaches that it is better to perform one's own svadharma imperfectly than to perfectly perform another's dharma. Svadharma aligns individual action with one's deepest nature.
Svadhyaya
svādhyāyaस्वाध्यायPhilosophySelf-study or study of sacred scriptures; one of the five niyamas in Patanjali's Yoga. Encompasses both study of sacred texts and self-inquiry (atma-vichara) to understand one's true nature.
Svarga
svargaस्वर्गCosmologyHeaven; the realm of the gods and of meritorious souls after death. Svarga is presided over by Indra and is the realm of pleasure and reward for virtuous deeds. Unlike moksha (final liberation), svarga is temporary — souls return to earth when their merit is exhausted.