evolvent

Latin ēvolvēns, ēvolventis (“unrolling”), present participle of ēvolvō (“I unroll”).

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evolvent (plural evolvents)

1. (geometry) The involute of a curve.

• evolute

• “evolvent”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

ēvolvent

1. third-person plural future active indicative of ēvolvō