"one who owns (something) with another," 1836, from co- + owner. Related: Co-ownership.
Entries linking to co-owner
co-
in Latin, the form of com- "together, with" in compounds with stems beginning in vowels, h-, and gn-; see com-. Taken in English from 17c. as a living prefix meaning "together, mutually, in common," and used promiscuously with native words (co-worker) and Latin-derived words not beginning with vowels (codependent), including some already having it (co-conspirator).
owner n.
"one who owns, one who has legal or rightful title," mid-14c., ouner, agent noun from own (v.). The Old English word was agnere.