There are 2 main definitions of Cu in English:

Cu1

Syllabification: Cu

symbol

The chemical element copper.

Origin

from late Latin cuprum.

Definition of Cu in:

There are 2 main definitions of Cu in English:

CU2

Line breaks: CU

Entry from British & World English dictionary

abbreviation

1Christian Union.
1.1 informal See you.

Definition of Cu in: