About The Word Lichen
Learn about the word Lichen to help solve your crossword puzzle. Discover Lichen definitions and meaning, origins, synonyms, related terms and more at the free Crossword Dictionary.
Lichen
Lichen Definition And Meaning |
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What's The Definition Of Lichen?
[n] any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.
[n] any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks Synonyms | Synonyms for Lichen: Related Terms | Find terms related to Lichen: acne | acne vulgaris | algae | autophyte | bean | bracken | brown algae | climber | conferva | confervoid | creeper | dermamycosis | dermatitis | dermatosis | diatom | eczema | elephantiasis | epithelioma | erysipelas | erythema | exanthem | fern | fruits and vegetables | fucus | fungus | grapevine | green algae | gulfweed | heat rash | herb | herpes | herpes simplex | herpes zoster | heterophyte | hives | impetigo | itch | ivy | jungle rot | kelp | legume | lentil | leprosy | liana | lichen primus | liverwort | lupus | lupus vulgaris | miliaria | mold | moss | mushroom | parasite | parasitic plant | pea | pemphigus | perthophyte | phytoplankton | planktonic algae | plant families | prickly heat | pruigo | pruritus | psora | puffball | pulse | red algae | ringworm | rockweed | rust | saprophyte | sargasso | sargassum | scabies | sea lentil | sea moss | sea wrack | seaweed | shingles | skin cancer | smut | succulent | tetter | toadstool | vetch | vine | wort | wrack See Also | arctic moss | ascolichen | basidiolichen | beard lichen | beard moss | Cetraria islandica | Cladonia rangiferina | crotal | crottal | crottle | disease of the skin | division Lichenes | fungus | horsehair lichen | horsetail lichen | Iceland lichen | Iceland moss | lecanora | lichen planus | lichen ruber planus | Lichenes | reindeer lichen | reindeer moss | roccella | Roccella tinctoria | skin condition | skin disease | skin disorder | skin problem | Usnea barbata Lichen In Webster's Dictionary \Li"chen\ (l[imac]"k[e^]n; 277), n. [L., fr. Gr.
leichh`n.]
1. (Bot.) One of a class of cellular, flowerless plants,
(technically called {Lichenes}), having no distinction of
leaf and stem, usually of scaly, expanded, frond-like
forms, but sometimes erect or pendulous and variously
branched. They derive their nourishment from the air, and
generate by means of spores. The species are very widely
distributed, and form irregular spots or patches, usually
of a greenish or yellowish color, upon rocks, trees, and
various bodies, to which they adhere with great tenacity.
They are often improperly called {rock moss} or {tree
moss}.
Note: A favorite modern theory of lichens (called after its
inventor the Schwendener hypothesis), is that they are
not autonomous plants, but that they consist of
ascigerous fungi, parasitic on alg[ae]. Each lichen is
composed of white filaments and green, or greenish,
rounded cells, and it is argued that the two are of
different nature, the one living at the expense of the
other. See {Hyph[ae]}, and {Gonidia}.
2. (Med.) A name given to several varieties of skin disease,
esp. to one characterized by the eruption of small,
conical or flat, reddish pimples, which, if unchecked,
tend to spread and produce great and even fatal
exhaustion.
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