Trichome
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.
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
trichome
(trĭk’ōm’, trī’kōm’)
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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