In decimal it represents 1.75 pints (5)

I believe the answer is:

litre

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'1 75 pints' is the definition.
I can't judge whether this defines the answer.

'in decimal it represents' is the wordplay.
'in' says the answer is hidden in the clue.
'LITRE' is hidden within 'decimal it represents'.

Can you help me to learn more?

(Other definitions for litre that I've seen before include "One thousand cubic centimetres" , "non-imperial measure" , "Approx 1 point 75 pints" , "Metric unit of volume" , "Metric measure of capacity" .)

I've seen this clue in The Globe and Mail.

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