Minuscule part of anatomy (4)
I believe the answer is:
atom
'minuscule part' is the definition.
'atom' can be an answer for 'part' (I have seen 'Part of molecule ' mean 'atom' so perhaps 'part' could also mean 'atom'). I'm unsure of the 'minuscule' bit.
'of anatomy' is the wordplay.
'of' says the answer is hidden in the clue.
'ATOM' is hidden in the letters of 'anatomy'.
Can you help me to learn more?
(Other definitions for atom that I've seen before include "Not much substance" , "A mighty particle, makes huge explosion" , "It was once thought to be smallest particle of matter" , "Smallest amount" , "Piece of matter in moat" .)