Patanjali's yoga sutras

The repeated continuation, or uninterrupted stream of that one point of focus is called absorption in meditation (dhyana), and is the seventh of the eight steps.
(tatra pratyaya ekatanata dhyanam)

tatra = there, therein (in that place or desha of 3.1)

pratyaya = the cause, the feeling, causal or cognitive principle, notion, content of mind, presented idea, cognition

ekatanata = one continuous flow of uninterrupted attention (eka = one; tanata = continued directedness) 

dhyanam = meditation