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Definition of heliotrope:

  1. A plant of the genus Heliotropium; - called also turnsole and girasole. H. Peruvianum is the commonly cultivated species with fragrant flowers.
  2. An instrument for making signals to an observer at a distance, by means of the sun's rays thrown from a mirror.
  3. An instrument or machine for showing when the sun arrived at the tropics and equinoctial line.
  4. See Bloodstone ( a).



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