Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD ORIGIN

1850, from Latin planaris "level, flat," from planum "plane" (see plane (n.1)).

MORE RELATED WORDS FOR PLANAR

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.