planal

English

Etymology

From plane +‎ -al.

Adjective

planal (not comparable)

1. Of or relating to a geometric plane.
   • 2009 April 30, Anne Eisenberg, “Solar Tech: Not Just on the Roof Anymore”, in New York Times‎^[1]:

     “Silicon does work well, but it’s always been the limitation that you make silicon devices on hard, rigid, planal surfaces,” Dr. Whitesides said.