Crossword Genius

Very small amount (4)

Ross

I think it could be either:

Which length description are you looking for?:

4

7

'very small amount' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for iota that I've seen before include "Grain" , "Tiny or scarcely detectable amount" , "Just a jot, like Greek letter" , "Gk. letter; tiny amount" , "Gr. letter; small amount" .)

I've seen this clue in The Washington Post, the Sydney Morning Herald, The Telegraph and The Times.
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