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trichome

American

[trik-ohm, trahy-kohm] / ˈtrɪk oʊm, ˈtraɪ koʊm /

noun

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

trichome British

/ ˈtraɪkəʊm, ˈtrɪk- /

noun

any hairlike outgrowth from the surface of a plant
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 Scientific

/ 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.

Other Word Forms

trichomic

adjective

Etymology

Origin of trichome

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

trichome

Meanwhile, when the well-studied trichome acylsugar gene was knocked out, root acylsugar production carried on as usual.

From Science Daily ● Apr. 24, 2024

Looking at public genetic sequence data, Kerwin noticed that many of the genes expressed in tomato trichome acylsugar production had close relatives in roots.

From Science Daily ● Apr. 24, 2024

To drive home this breakthrough, Jaynee Hart, a postdoctoral researcher and second author on the latest paper, looked closer at the functions of trichome and root enzymes.

From Science Daily ● Apr. 24, 2024

Previously, the Last lab identified a BGC containing genes linked to trichome acylsugars in tomato plants.

From Science Daily ● Apr. 24, 2024

"The presence of these acylsugars in roots was fascinating and led to so many questions. How did this happen, how are they being made and are they different from the trichome acylsugars we've been studying?"

From Science Daily ● Apr. 24, 2024

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023