Filed from 2 published puzzles

MOLECULE

Set to 2 different clues across 2 published puzzles, most often “Tiny bit” — The New York Times, Saturday, 5 June 1999.

8 letters

Every clue on record, most used first

Tiny bitonce
The New York Times — Saturday, 5 June 1999
Chemistry class modelonce
The New York Times — Friday, 2 May 1997

Other answers to these clues

ATAD4 letters
ATOM4 letters
DAB3 letters
IOTA4 letters
JOT3 letters
MITE4 letters
OUNCE5 letters
SPECK5 letters
TAD3 letters
TRACE5 letters