What does "cm" mean in English?

"cm" means cm or centimeter. It is a German symbol.

SYMBOL

cmcm; centimeter

cm is a German symbol that means cm or centimeter.

1.abbreviation for Zentimeter, a unit of length equal to one hundredth of a meter(measurement; symbol)

a.used to indicate a length in centimeters

Das Buch ist 20 cm breit.—The book is 20 cm wide.

What does "cm" mean in English?: "cm" means cm or centimeter. It is a German symbol.
What part of speech is "cm"?: "cm" is a symbol in German.

Practice it in real sentences in the Alexandria app. Miss it, and Alexandria explains why, then brings it back right before you’d forget.