Crossword Genius

GPS approximation

Ross

I believe the answer is:

eta

'gps approximation' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for eta that I've seen before include "Militants" , "Greek letter - Basque nationalist movement" , "when you can hope to receive it" , "Militant Basque organisation - Greek letter" , "Member of Greek set a" .)

I've seen this clue in The New York Times.
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