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trichome

[ trik-ohm, trahy-kohm ]

noun

  1. Botany. an outgrowth from the epidermis of plants, as a hair.
  2. a microorganism composed of many filamentous cells arranged in strands or chains.


trichome

/ ˈtrɪk-; ˈtraɪkəʊm; trɪˈkɒmɪk /

noun

  1. any hairlike outgrowth from the surface of a plant
  2. any of the threadlike structures that make up the filaments of blue-green algae
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


trichome

/ trĭkōm′,trīkōm′ /

  1. One of the hairlike or bristlelike outgrowths on the epidermis of a plant. Trichomes serve a variety of functions, depending on their location. As root hairs (and as leaf hairs in epiphytes), trichomes absorb water and minerals. As leaf hairs, they reflect radiation, lower plant temperature, and reduce water loss. They also provide defense against insects.


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Derived Forms

  • trichomic, adjective
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Other Words From

  • tri·chom·ic [trih-, kom, -ik, -, koh, -mik], adjective
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Word History and Origins

Origin of trichome1

First recorded in 1870–75, trichome is from the Greek word tríchōma growth of hair. See trich-, -oma
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Word History and Origins

Origin of trichome1

C19: from Greek trikhōma , from trikhoun to cover with hair, from thrix a hair

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