■ verb
1》 appoint to membership of a committee or other body by invitation of the existing members.
2》 divert to a role different from the usual or original one.
↘adopt (an idea or policy) for one's own use.
Derivatives
~ation noun
~ion noun
~ive adjective
Origin
C17: from L. cooptare , from co- 'together' + optare 'choose'.