Look up: lichen

1. 
   Lichen
   A combined growing condition of algae and fungus. It looks crusty, and comes in many colors: gray, green, bluish, or browns.
   Found on http://www.emilycompost.com/garden_gloss
   
   
2. 
   lichen
   A thallus consisting of an alga and fungus intermixed and living in a symbiotic relationship.
   Found on http://ppathw3.cals.cornell.edu/glossary
   
   
3. 
   Lichen
   A regular association of an alga or cyanobacterium with a fungus, usually leading to the formation of a plant-like structure.
   Found on http://www.pestmanagement.co.uk/lib/glos
   
   
4. 
   lichen
   [n] - any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks 2. [n] - any thallophytic plant of the division Lichenes
   Found on http://www.webdictionary.co.uk/definitio
   
   
5. 
   lichen
   A symbiotic growth of fungus and algea. A variety known as reindeer moss is frequently sold in model shops and is used to simulate bushes and trees. Check out this article for further information.
   Found on http://www.terragenesis.co.uk/glossary.p
   
   
6. 
   lichen
   A large group of symbiotic associations between fungi and green and occasionally blue-green algae. Several genera of algae and of fungi are involved and the associations are so stable and of such varied but distinct types that the lichens have been classified into genera and species. A variety of incompatibility phenomena are often manifest between individual lichens. Confined to terrestrial habitats and often used as indicators of pollution status of the environment.
   Found on
   
   
7. 
   Lichen
   Li'chen (lī'kĕn; 277) noun [ Latin , from Greek leichh`n .] 1. (Botany) 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 mean ...
   Found on http://www.encyclo.co.uk/webster/L/37
   
   
8. 
   lichen
   A large group of symbiotic associations between fungi and green and occasionally blue green algae. Several genera of algae and of fungi are involved and the associations are so stable and of such varied but distinct types that the lichens have been classified into genera and species. A variety of incompatibility phenomena are often manifest between ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
9. 
   lichen
   noun any thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
10. 
    lichen
    noun any of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rocks
    Found on http://wordnet.princeton.edu/perl/webwn?
    
    
11. 
    Lichen
    `Lichens` are symbiotic associations of a fungus (the mycobiont) with a photosynthetic partner (the photobiont also known as the phycobiont) that can produce food for the lichen from sunlight. The photobiont is usually either green alga or cyanobacterium. A few lichens are known to contain yellow-green algae or, in one case, a brown alga. Some lichens contain both green algae and cyanobacteria as photobionts; in these cases, the cyanobacteria sym...
    Found on http://en.wikipedia.org/wiki/Lichen
    
    
12. 
    lichen
    (li´kәn) any of certain plants formed by the mutualistic combination of an alga and a fungus. any of various papular skin diseases in which the lesions are typically small, firm papules set close together.
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
13. 
    Lichen
    • (n.) 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,...
    Found on http://thinkexist.com/dictionary/meaning
    
    
14. 
    lichen
    any of about 15,000 species of thallophytic plantlike organisms that consist of a symbiotic association of algae (usually green) and fungi (mostly ... [5 related articles]
    Found on http://www.britannica.com/eb/a-z/l/46
    
    
15. 
    lichen
    A discrete flat papule or an aggregate of papules giving a patterned configuration resembling lichen growing on rocks. [G. leichn, lichen; a lichenlike eruption]
    Found on
    
    
16. 
    Lichen
    Organism that consists of a symbiotic joining of a species of fungi and a species of algae.
    Found on http://www.physicalgeography.net/physgeo
    
    
17. 
    lichen
    Lichen is actually two types of creature, rolled into one – the alga provides the fungus with food while the fungus offers the alga a cosy living environment. Image: L Sancho A symbiotic relationship between a fungus and an alga. Every lichen (pronounced 'lyken', not 'litchin&quo...
    Found on http://www.daviddarling.info/encyclopedi
    
    
18. 
    lichen
    lichen (lī'kun) , usually slow-growing organism of simple structure, composed of fungi (see Fungi) and photosynthetic green algae or cyanobacteria living together in a symbiotic relationship and resulting in a structure that resembles neither constituent. There are about 25,000 species, mo...
    Found on http://www.infoplease.com/ce6/sci/A08296