Crossword Genius

Itsy-bitsy bit (4)

Ross

I believe the answer is:

atom

'itsy-bitsy bit' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for atom that I've seen before include "Very small object or amount" , "A wee bit" , "A tiny particle of matter with a big bang" , "Tiny bit" , "Particle of matter now divided" .)

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