A protocol (defined in RFC 1467 ) that allows for variable-length addresses that allows for more- and less-specific routing information. This replaces the old class A, class B, class C routing scheme.
CLASSLESS INTERNET DOMAIN ROUTING (CIDR)
Meaning of CLASSLESS INTERNET DOMAIN ROUTING (CIDR) in English
Josh's Network English Glossary. Английский словарь Josh's Network. 2012