[ adjective, noun in-vuh-loot; verb in-vuh-loot, in-vuh-loot ]
/ adjective, noun ˈɪn vəˌlut; verb ˌɪn vəˈlut, ˈɪn vəˌlut /



Geometry. any curve of which a given curve is the evolute.

verb (used without object), in·vo·lut·ed, in·vo·lut·ing.

to roll or curl up; become involute.
to return to a normal shape, size, or state.


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Origin of involute

1655–65; < Latin involūtus (past participle of involvere to roll up, wrap, cover), equivalent to in- in-2 + volū- (variant stem of volvere to roll) + -tus past participle suffix; cf. involve


in·vo·lute·ly, adverbsub·in·vo·lute, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for involute

British Dictionary definitions for involute


adjective (ˈɪnvəˌluːt) involuted

complex, intricate, or involved
botany (esp of petals, leaves, etc, in bud) having margins that are rolled inwards
(of certain shells) closely coiled so that the axis is obscured

noun (ˈɪnvəˌluːt)

geometry the curve described by the free end of a thread as it is wound around another curve, the evolute, such that its normals are tangential to the evoluteSee also evolute

verb (ˌɪnvəˈluːt)

(intr) to become involute

Derived forms of involute

involutely, adverbinvolutedly, adverb

Word Origin for involute

C17: from Latin involūtus, from involvere; see involve
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