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Entry 3 senses · 2 variants Webster, 1913

Involute

· In·vo·lute · IPA
01 a. Rolled inward from the edges; -- said of leaves in vernation, or of the petals of flowers in æstivation.
  1. 1.
    Rolled inward from the edges; -- said of leaves in vernation, or of the petals of flowers in æstivation.(Bot.)
  2. 2.
    Turned inward at the margin, as the exterior lip of the Cyprea.(Zool.)
02 n. A curve traced by the end of a string wound upon another curve, or unwound from it; -- called also evolvent. See Evolute.
  1. 1.
    A curve traced by the end of a string wound upon another curve, or unwound from it; -- called also evolvent. See Evolute.(Geom.) Also: evolvent See: Evolute