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turnsole |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Turnsole \Turn"sole`\, n. [F. tournesol It tornasole tornare to turn (LL. tornare) + sole the sun, L. sol. See {Turn}, {Solar}, a., and cf {Heliotrope}.] [Written also {turnsol}.] 1. (Bot.) a A plant of the genus {Heliotropium}; heliotrope; -- so named because its flowers are supposed to turn toward the sun. b The sunflower. c A kind of spurge ({Euphorbia Helioscopia}). d The euphorbiaceous plant {Chrozophora tinctoria}. 2. (Chem.) a Litmus. [Obs.] b A purple dye obtained from the plant turnsole. See def. 1 d . From Webster's Revised Unabridged Dictionary (1913) [web1913]: 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}. {H. 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.
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