What does C.D. stand for?

What does C.D. mean?

CD	Compact Dog Miscellaneous » Unclassified
CD	Coarse Decision Miscellaneous » Unclassified
CD	Congressional District Miscellaneous » Unclassified
CD	Curmudgeons Danny Miscellaneous » Unclassified
CD	Child Development Miscellaneous » Unclassified
CD	Cluster Differentiation Miscellaneous » Unclassified
CD	Clearly Digital Miscellaneous » Unclassified
CD	Customer Definite Miscellaneous » Unclassified
CD	Certainty And Dependability Miscellaneous » Unclassified
CD	Conservancy District Miscellaneous » Unclassified
CD	Carrel Dakin Miscellaneous » Unclassified
CD	Constant Depression Miscellaneous » Unclassified
CD	Classy Dragapella Miscellaneous » Unclassified
CD	Crouch Dash Miscellaneous » Unclassified
CD	Cold Deadapril Miscellaneous » Unclassified
CD	Cold Dead Miscellaneous » Unclassified
CD	Cold Deadraising Miscellaneous » Unclassified
CD	Couche Dur Miscellaneous » Unclassified
CD	Current Disease Miscellaneous » Unclassified
CD	Carl Dinkelacker Miscellaneous » Unclassified
CD	Civil Disobedience Miscellaneous » Unclassified
CD	Cuse Drummer Miscellaneous » Unclassified
CD	Cirrus Design Miscellaneous » Unclassified
CD	Changing Directory Miscellaneous » Unclassified
CD	Current Directory Miscellaneous » Unclassified