WordReference Random House Unabridged Dictionary of American English © 2025
co•ex•tend
(kō′ik stend′),USA pronunciation v.t., v.i.
co•ex•ten•sion
(kō′ik sten′shən),USA pronunciation n.
- to extend equally through the same space or duration.
- 1610–20; co- + extend
'coextension' also found in these entries (note: many are not synonyms or translations):