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(trĭk′ōm′, trī′kōm′)
A hairlike or bristlelike, sometimes glandular, outgrowth from the epidermis of a plant.

[Greek trikhōma, growth of hair, from trikhoun, to cover with hair, from thrix, trikh-, hair, of unknown origin.]


(ˈtraɪkəʊm; ˈtrɪk-)
1. (Botany) any hairlike outgrowth from the surface of a plant
2. (Botany) 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]
trichomic adj


(ˈtrɪk oʊm, ˈtraɪ koʊm)

1. a hairy outgrowth on a plant's surface, as a prickle.
2. a microorganism composed of many filamentous cells arranged in strands or chains.
[1870–75; < Greek tríchōma growth of hair. See tricho-, -oma]
tri•chom•ic (trɪˈkɒm ɪk, -ˈkoʊ mɪk) adj.
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References in periodicals archive ?
caymensis the calyces are covered in long, sticky, capitate-glandular trichomes, as well as short, hooked, uniseriate trichomes (Fig.
The hypocotyledonary epidermis (Figure 2B and C) is uniseriate and exhibits stomata and unicellular non-glandular trichomes, while the cortex (Figure 2B and C) consists of collenchyma, parenchyma and starchy endodermis.
Key results: All species contain multicellular uniseriate trichomes which may be glandular or non-glandular.
Neonates and young larvae may feed on soybean trichomes and flowers if these tissue types are present (Mueller & Engroff 1980).
It is known that this species has trichomes that secrete toxic bimolecular that act on herbivorous insects [53, 64, 36, 14, 62, 37, 23].
The symptoms caused by this mite are known as erinosis, which are abnormally developed trichomes of singular and variable color according to variety (MANSON; Oldfield, 1996).
Urtica dioica, often called common nettle, has hollow stinging hairs called trichomes on the leaves and stems, which act aSk
They have scales called trichomes on their leaves that harvest water and nutrients.
The following types of secretory structures have already been recorded in the family: trichomes, idioblasts, laticifers, coletters, nectaries, secretory cells with resinous contents, tannin cells, and mucilage lacunae (Solereder 1908; Metcalfe and Chalk 1950; Thomas 1991).
A variety of characters like epidermal cells, subsidiary cells, guard cells, trichomes, macro-hairs, micro-hairs and stomata were used as a tool for the taxonomic grouping of different species.