what is the correct definition for centimeter?

Answer 1

http://dictionary.reference.com/browse/centimeter

Answer 2

I must be honest and say I never thought about it. I assume the definition of centimeter is 1/100 of a meter. If I am incorrect, perhaps another volunteer will correct this post. Here is a site where you can read more about the prefixes.
http://physics.nist.gov/cuu/Units/prefixes.html