Yoga Sutras of Patanjali · 3.2

तत्र प्रत्ययैकतानता ध्यानम्॥२॥

tatra pratyayaikatānatā dhyānam

Dhyana — meditation — is the unbroken continuous flow of cognition toward that single object held in dharana.

— Yoga Sutras of Patanjali 3.2

Source: Sanskrit attributed to Patanjali (c. 2nd century BCE – 4th century CE). Public-domain English readings drawn from Swami Vivekananda's 'Raja Yoga' (1896) and Charles Johnston's 'The Yoga Sutras of Patanjali' (1912).