1. (noun)centimeter, centimetre, cm a metric unit of length equal to one hundredth of a meter Synonyms: centimeter, curium, centimetre, atomic number 96, cm
2. (noun)curium, Cm, atomic number 96 a radioactive transuranic metallic element; produced by bombarding plutonium with helium nuclei Synonyms: centimeter, curium, centimetre, atomic number 96