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.

Origin of trichome

1
First recorded in 1870–75, trichome is from the Greek word tríchōma growth of hair. See trich-, -oma

Other words from trichome

  • tri·chom·ic [trih-kom-ik, -koh-mik], /trɪˈkɒm ɪk, -ˈkoʊ mɪk/, adjective

Words Nearby trichome

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British Dictionary definitions for trichome

trichome

/ (ˈtraɪkəʊm, ˈtrɪk-) /


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

Origin of trichome

1
C19: from Greek trikhōma, from trikhoun to cover with hair, from thrix a hair

Derived forms of trichome

  • trichomic (trɪˈkɒmɪk), adjective

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

Scientific definitions for trichome

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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