Crossword Genius

The "k" in kg (4)

Ross

I believe the answer is:

kilo

'the k in kg' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for kilo that I've seen before include "Metrical unit of weight" , "Lewis Carroll heroine" , "Metric unit of weight" , "Metric weight, informally" , "2.2 lbs" .)

I've seen this clue in the Universal and the USA Today.
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