also co-ordinal, 1849, in mathematics and geometry, "having (a certain number) of coordinates;" see co- + ordinal.
Entries linking to coordinal
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).
ordinal n.
early 14c., "book setting forth the order of services in the Church," from Late Latin adjective ordinalis (see ordinal (adj.)), which was used as a noun in Medieval Latin.