Dictionary

coextensive en · ADJ

Pronunciation

• /ˌkoʊ.ɛkˈstɛn.sɪv/ (US)
• /ˌkəʊ.ɪkˈstɛn.sɪv/ (UK)
• (US) audio

Etymology

Etymology tree Proto-Indo-European *ḱe? Proto-Indo-European *ḱóm Proto-Italic *kom Proto-Italic *kom- Latin con- Latin co-lbor. English co- Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Italic *eks Latin ex Latin ex- Proto-Indo-European *ten- Proto-Indo-European *tend- Proto-Indo-European *-eti Proto-Indo-European *téndeti Proto-Italic *tendō Latin tendō Latin extendō Latin extēnsus Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Late Latin extensīvusder. Middle English extensive English extensive English coextensive From co- + extensive.

Meanings

1. (not-comparable) Having the same spatial limits or boundaries; sharing the same area.
   • And then there are the catch-all provisions: rules that allow police to stop drivers for conduct that complies with all the rules on the books, but that officers consider "imprudent" or "unreasonable" under the circumstances, or that describe the offense in language so broad as to make a vioation virtually coextensive with the officer's unreviewable personal judgment. 2019, Malcolm Gladwell, Talking to Strangers:
   • The city and county of San Francisco are coextensive.
2. (not-comparable) Occurring over the same period of time; contemporaneous.
   • His life is almost co-extensive with one of the most disastrous periods in Roman history. 1946, Bertrand Russell, History of Western Philosophy, I.30:
3. (not-comparable) Having the same extension—the object or set of objects to which a term refers.
   • Coextensive expressions with different intensions cannot in general be substituted for one another within an expression e while preserving the extension of e (assuming that the extension of a declarative sentence is its truth value). 1995, Jaegwon Kim, Ernest Sosa, A Companion to Metaphysics:

Forms

Deriveds

coextensively · coextensiveness

Relateds

coextension · coterminous · extensive