different between heliotropism vs heliotrope

English

Etymology

helio- +? -tropism

Noun

heliotropism (countable and uncountable, plural heliotropisms)

1. The property of some plants of turning under the influence of light; either positively (towards the light) or negatively (away from the light)
   • 2012, Staff (University of Wisconsin-Madison), Sunflowers inspire more efficient solar power system, R&D Magazine, online:

     A field of young sunflowers will slowly rotate from east to west during the course of a sunny day, each leaf seeking out as much sunlight as possible as the sun moves across the sky through an adaptation called heliotropism.

Derived terms

• heliotropic

Related terms

• heliotrope

Translations

Romanian

Etymology

From French héliotropisme

Noun

heliotropism n (uncountable)

1. heliotropism

Declension

English

Etymology

From French héliotrope, from Ancient Greek ??????????? (h?liotrópion), from ????? (h?lios, “sun”) + ????? (trép?, “turn”). See also Old English sunnfolgend.

Pronunciation

• (US) IPA^(key): /?hi?li.??t?o?p/

Noun

heliotrope (countable and uncountable, plural heliotropes)

1. (botany) A plant that turns so that it faces the sun.
   1. (botany) Particularly, a purple-flowered plant of the species Heliotropium arborescens.
      • 1870, Benjamin Disraeli, Lothair

        As they entered now, it seemed a blaze of roses and carnations, though one recognized in a moment the presence of the lily, the heliotrope, and the stock.

2. A light purple or violet colour.
3. The fragrance of heliotrope flowers.
   • 1881, Henry James, The Portrait of a Lady

     ... he had always smelt so much more of heliotrope than of gunpowder.

   • 1906, O. Henry, The Furnished Room

     Ransacking the drawers of the dresser he came upon a discarded, tiny, ragged handkerchief. He pressed it to his face. It was racy and insolent with heliotrope; [...]

4. (mineralogy) A bloodstone (a variety of quartz).
5. (surveying) An instrument, employed in triangulation, that uses a mirror to reflect sunlight toward another, very distant, surveyor.

Synonyms

• (Heliotropium arborescens): cherry pie, common heliotrope
• (rock): bloodstone

Related terms

• (direction): heliotropism

Translations

Adjective

heliotrope (comparative more heliotrope, superlative most heliotrope)

1. Light purple or violet.
   • 1904, Jerome K. Jerome, Tommy and Co.

     Lady in a heliotrope dress with a lace collar, three flounces on the skirt?

   • 1917, Zane Grey, Wildfire

     And following that was a tortuous passage through a weird region of clay dunes, blue and violet and heliotrope and lavender, all worn smooth by rain and wind.

2. Keeping one’s face turned toward the sun.
   • 1851, Herman Melville, Moby Dick

     while still as on the night before, slouched Ahab stood fixed within his scuttle; his hid, heliotrope glance anticipatingly gone backward on its dial; sat due eastward for the earliest sun.

Derived terms

• (colour): heliotrope cyanosis

Related terms

• (direction): heliotropic

Derived terms

• winter heliotrope

See also

• Appendix:Colors