Crossword Genius

Lab process in which small bird takes part (9)

Ross

I believe the answer is:

titration

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

'lab process' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'small bird takes part' is the wordplay.
'small bird' becomes 'tit' (I've seen this before).
'takes' means one lot of letters go next to another.
'part' becomes 'ration' (ration is a kind of part).
'tit'+'ration'='TITRATION'

'in which' is the link.

Can you help me to learn more?

(Other definitions for titration that I've seen before include "lab procedure" , "Process used by chemist" .)

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