[f. CO- 3 + EXTENSION.] Coincidence in extension.
1677. Hale, Prim. Orig. Man., I. i. 23. Some analogy, at least of co-extension, with my Body.
1855. H. Spencer, Princ. Psychol., II. VI. v. 37. Coextension … or to speak … more comprehensibly—sameness in the quantity of space occupied.
