The Collaborative International Dictionary of English v.0.48:
Ordinate \Or"di*nate\, a. [L. ordinatus, p. p. of ordinare. See Ordain.] Well-ordered; orderly; regular; methodical. "A life blissful and ordinate." --Chaucer. [1913 Webster] Ordinate figure (Math.), a figure whose sides and angles are equal; a regular figure. [1913 Webster]