[trik-ohm, trahy-kohm]
Botany. an outgrowth from the epidermis of plants, as a hair.
a microorganism composed of many filamentous cells arranged in strands or chains.

1870–75; < Greek tríchōma growth of hair. See trich-, -oma

trichomic [trih-kom-ik, -koh-mik] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
trichome (ˈtraɪkəʊm, ˈtrɪk-)
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
[C19: from Greek trikhōma, from trikhoun to cover with hair, from thrix a hair]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
trichome   (trĭk'ōm', trī'kōm')  Pronunciation Key 
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.
The American Heritage® Science Dictionary
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