Search Result for "coplanar": 
Wordnet 3.0

ADJECTIVE (1)

1. lying in the same plane;


The Collaborative International Dictionary of English v.0.48:

Coplanar \Co*plan"ar\ (k[-o]*pl[=a]n"[~e]r), a. [Pref. co- + plane.] (Math.) Situated in one plane. [1913 Webster]
WordNet (r) 3.0 (2006):

coplanar adj 1: lying in the same plane