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Meaning of LICHEN

Pronunciation:  'lIkun

WordNet Dictionary
  1. [n]  any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.
  2. [n]  any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks

LICHEN is a 6 letter word that starts with L.


 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



Webster's 1913 Dictionary
\Li"chen\ (l[imac]"k[e^]n; 277), n. [L., fr. Gr.
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

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

Biology Dictionary
 Definition: A mutualistic association of a fungus and photosynthetic organism, either a unicellular alga or a cyanobacterium. Some lichens are used to make natural fabric dyes.
Thesaurus Terms
 Related Terms: 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