| Coextensive (a.) Equally extensive; having equal extent; as, consciousness and knowledge are coextensive. Thesaurus Entries aligned, analogous, coequal, coextending, coincident, coincidental, coinciding, collateral, concurrent, congruent, correspondent, corresponding, coterminous, equal, equidistant, equispaced, equivalent, even, lined up, nonconvergent, nondivergent, parallel, parallelepipedal, parallelinervate, paralleling, parallelodrome, parallelogrammatic, parallelogrammic, parallelotropic, synonymous |