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definitions

-grade

  1. a combining form meaning “walking, moving,” in the manner or by the means specified by the initial element: plantigrade.

Origin of -grade

< Latin -gradus, combining form representing gradus step or gradī to walk. See grade, gradient
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for -grade

-grade

adj combining form
  1. indicating a kind or manner of movement or progressionplantigrade; retrograde

Word Origin for -grade

via French from Latin -gradus, from gradus a step, from gradī to walk
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