'Coextension' definitions:
Definition of 'coextension'
(from WordNet)
noun
Equality of extension or duration
Definition of 'Coextension'
From: GCIDE
- Coextension \Co`ex*ten"sion\ (k[=o]`[e^]ks*t[e^]n"sh[u^]n), n. The act of extending equally, or the state of being equally extended. [1913 Webster]