| n. | 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 | ||||
| 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
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| Noun | 1. | heliotrope - green chalcedony with red spots that resemble blood Synonyms: bloodstone |