The Collaborative International Dictionary of English v.0.48:

Centimeter \Cen"ti*me`ter\, Centimetre \Cen"ti*me`tre\, n. [F.
   centim[`e]tre; centi- (L. centum) + m[`e]tre. See Meter.]
   The hundredth part of a meter; a measure of length equal to
   rather more than thirty-nine hundredths (0.3937) of an inch.
   See Meter.
   [1913 Webster]

WordNet (r) 3.0 (2006):

centimetre
    n 1: a metric unit of length equal to one hundredth of a meter
         [syn: centimeter, centimetre, cm]