Svādhyāya (Devanagari: स्वाध्याय) is a Sanskrit term which literally means "one's own reading" and "self-study". It is also a broader concept with several meanings. In various schools of Hinduism, Svadhyaya is a Niyama (virtuous observance) connoting introspection and "study of self". The term also means the self-study and recitation of the Vedas and other sacred books.
Svādhyāya is a compound Sanskrit word composed of svā (स्वा) + adhyāya (अध्याय). Adhyāya means "a lesson, lecture, chapter; reading". Svā means "own, one's own, self, the human soul". Therefore, Svādhyāya literally means "one's own reading, lesson".
Svādhyāya is also a compound Sanskrit word composed of svā (स्वा) + dhyāya (ध्याय). Dhyāya means "meditating on". The root of Adhyāya and Dhyāya is “Dhyai” (ध्यै) which means “meditate, contemplate, think of”. The term Svādhyāya therefore, also connotes “contemplation, meditation, reflection of one self”, or simply “to study one’s own self”.
The term Svadhyaya has other meanings. In the Smritis, it refers to the historical practice of self-reciting Vedas to ensure it is memorized and faithfully transmitted, without writing, by the word of mouth, to the next generation. In various schools of Hinduism, particularly Yoga, Svadhyaya is also a niyama, a virtuous behavior. As a virtue, it means "study of self", "self-reflection", "introspection, observation of self".
Svādhyāya is translated in a number of ways. Some translate it as the "study of the scriptures and darśanas." Some translators simply use the word "study" without qualifying the type of study. MacNeill translates it as "self-study or spiritual self-education". Dhyāya, when used in the context of self study in ancient and medieval Indian texts, is synonymous with Abhyasa, Adhi and Viks; while Adhyāya, when used in context of reciting and reading in Indian texts, is synonymous with Anukti, Nipatha and Patha.