- a combining form meaning “flat,” “plane,” used in the formation of compound words: planography.
Origin of plano-1
combining form representing Latin plānus level, plānum level ground
- a combining form meaning “moving,” “capable of movement,” used in the formation of compound words: planogamete.
Origin of plano-2
combining form representing Greek plános wandering, roaming. See planet
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
sometimes before a vowel plan-
- indicating flatness or planenessplano-concave
from Latin plānus flat, level
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for plano-
Online Etymology Dictionary, © 2010 Douglas Harper
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.