Top Definition
Combination made-up--joke measurement of a centimetre and a millimetre. Based on the Metric system, as used in Canada and Europe.Came by as a mistake my 7 year old made doing measurements in math.
"How long is it,anyway?"
"Oh, about a cillimetre"
cm+mm=cmm
by Pogmothoin February 15, 2009
5 Words related to Cillimetre

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