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What is "heliotrope purple"

The Collaborative International Dictionary
Heliotrope purple

Heliotrope \He"li*o*trope\, n. [F. h['e]liotrope, L. heliotropium, Gr. ?; ? the sun + ? to turn, ? turn. See Heliacal, Trope.]

  1. (Anc. Astron.) An instrument or machine for showing when the sun arrived at the tropics and equinoctial line.

  2. (Bot.) A plant of the genus Heliotropium; -- called also turnsole and girasole. Heliotropium Peruvianum is the commonly cultivated species with fragrant flowers.

  3. (Geodesy & Signal Service) An instrument for making signals to an observer at a distance, by means of the sun's rays thrown from a mirror.

  4. (Min.) See Bloodstone (a) .

    Heliotrope purple, a grayish purple color.