Crossword Genius

Backchat over identity of fatty material (5)

Ross

I believe the answer is:

lipid

I'm a little stuck... Click here to teach me more about this clue!

'fatty material' is the definition.
The definition and answer can be both substances as well as being singular nouns.
Perhaps you can see an association between them that I can't see?

'backchat over identity' is the wordplay.
'backchat' becomes 'lip' (I've seen this in other clues).
'over' says to put letters next to each other (in a down clue, some letters go over others).
'identity' becomes 'id' (abbreviation).
'lip'+'id'='LIPID'

'of' acts as a link.

Can you help me to learn more?

(Other definitions for lipid that I've seen before include "Insoluble fatty acid" , "fat, perhaps" , "One of the essential structural components of living cells" , "Organic compound" , "fatty stuff" .)

I've seen this clue in the Sydney Morning Herald.
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