trichome [trik-ohm, trahy-kohm] Word Origin noun
- Botany. an outgrowth from the epidermis of plants, as a hair.
- a microorganism composed of many filamentous cells arranged in strands or chains.
Origin of trichome First recorded in 1870–75, trichome is from the Greek word tríchōma growth of hair. See, Related formstri·chom·ic [trih-kom-ik, -koh-mik] /trɪˈkɒm ɪk, -ˈkoʊ mɪk/, adjective British Dictionary definitions for trichome trichome noun
- any hairlike outgrowth from the surface of a plant
- any of the threadlike structures that make up the filaments of blue-green algae
Derived Formstrichomic (trɪˈkɒmɪk), adjectiveWord Origin for trichome C19: from Greek trikhōma, from trikhoun to cover with hair, from thrix a hair trichome in Science 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.