Note:  Do not rely on this information. It is very old.


Centimetre, a unit of length, the hundredth part of a metre (q.v.). Its value in English measure is .3937079 of an inch, which is between 3/8ths and 2/5ths of an inch; either of these fractions may be taken as an approximation. A cubic centimetre of pure water at 4° C. has a mass of one gramme, or very nearly so. A litre of pure water, or 1000 cc, weighs, therefore, one kilogramme.