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evolute

noun
evo·lute | \ˈe-və-ˌlüt also ˈē-və- \

Definition of evolute 

: the locus of the center of curvature or the envelope of the normals of a curve

First Known Use of evolute

1704, in the meaning defined above

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Dictionary Entries near evolute

Evodia

evoke

evokes/invites comparison with

evolute

evolution

evolutional

evolutionary biology

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The first known use of evolute was in 1704

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