CIDR

Proper Noun

• Acronym of w:Classless Inter-Domain Routing normally an [[IP address notation such as 192.168.1.0/24 indicating a block of addresses. The number after the slash indicates how many bits are in the mask; bits to the right are not masked.

Noun

• Initialism of controlled internal drug release; technology for the controlled release of a hormone or drug, for example as used to release progesterone in beef cattle.