[ev-uh-loot or, esp. British, ee-vuh-]

Origin of evolute

1720–30; < Latin ēvolūtus (past participle of ēvolvere to roll out, unfold, evolve)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for evolute

Historical Examples of evolute

British Dictionary definitions for evolute


  1. a geometric curve that describes the locus of the centres of curvature of another curve (the involute). The tangents to the evolute are at right angles to the involute
  1. biology having the margins rolled outwards

Word Origin for evolute

C19: from Latin ēvolūtus unrolled, from ēvolvere to roll out, evolve
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