Crossword Genius

Letter after zeta (3)

Ross

I believe the answer is:

eta

'letter after zeta' 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 - time due (abbr)" , "When you'd expect to see" , "when it might reach us?" , "Basque separatist movement" .)

I've seen this clue in the Universal, the King Feature Syndicate and The New York Times.
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