Look up: Operculum

1. 
   operculum
   The bony covering of the gill chamber; the gill cover.
   Found on http://www.pearlfishpress.com/glossary.h
   
   
2. 
   operculum
   A flap or lid-like covering over the opening of an ascus or sporangium. (Pl. opercula.)
   Found on http://ppathw3.cals.cornell.edu/glossary
   
   
3. 
   Operculum
   a bony gill cover.
   Found on http://www.coralrealm.com/viewpage.asp?p
   
   
4. 
   Operculum
   The lid or cover-like specialisation of a parasite eggshell through which the larva escapes.
   Found on http://www.pestmanagement.co.uk/lib/glos
   
   
5. 
   operculum
   [n] - a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted
   Found on http://www.webdictionary.co.uk/definitio
   
   
6. 
   Operculum
   O·per'cu·lum noun ; plural Latin Opercula , English Operculums . [ Latin , a cover or lid, from operire to cover.] 1. (Botany) (a) The lid of a pitcherform leaf. (b) The lid of the urnlike capsule of mosses. 2. (Anat.) (a) Any lidlike or operculiform process or part; as, the opercula of a dental follicle. < ...
   Found on http://www.encyclo.co.uk/webster/O/23
   
   
7. 
   operculum
   A lid or cover becoming detached at maturity by abscission, in Eucalyptus (for example), a cap covering the bud and formed by fusion or cohesion of perianth parts. ... (09 Oct 1997) ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
8. 
   operculum
   noun a hard flap serving as a cover for (a) the gill slits in fishes or (b) the opening of the shell in certain gastropods when the body is retracted
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
9. 
   Operculum
   In biology, `operculum` (Latin for `little lid`) has been used to describe several different anatomical features, in animals, in humans and even in plants. The following list gives some of the uses of the term: *Operculum (gastropod), a lid on the shell of some gastropods. *Operculum (incense ingredient), made from the operculum of gastropods. *Operculum (fish), a flap of the bony fish covering the gills. *Operculum (botany), various lids and fl...
   Found on http://en.wikipedia.org/wiki/Operculum
   
   
10. 
    operculum
    (o-pur´ku-lәm) Latin word meaning lid or covering. the folds of pallium from the frontal, parietal, and temporal lobes of the cerebrum overlying the insula. adj., oper´cular., adj. dental operculum the hood of gingival tissue overlying the crown of an erupting...
    Found on http://www.mercksource.com/pp/us/cns/cns
    
    
11. 
    Operculum
    • (n.) The lid of the urnlike capsule of mosses. • (n.) The lid of a pitcherform leaf. • (n.) The lid closing the aperture of various species of shells, as the common whelk. See Illust. of Gastropoda. • (n.) Any lidlike or operculiform process or part; as, the opercula of a dental follicle. • (n.) Any lid-shaped structure c...
    Found on http://thinkexist.com/dictionary/meaning
    
    
12. 
    operculum
    (from the article `bryophyte`) The moss sporangium usually opens by way of an apical lid (the operculum). When the operculum falls, there is exposed a ring of teeth that controls ... ...and often with thickened midrib; cells usually lacking corner thickenings; oil bodies, if present, not complex; jacket of sporangium often with ... [...
    Found on http://www.britannica.com/eb/a-z/o/23
    
    
13. 
    operculum
    (from the article `amphibian`) ...can receive external stimuli. Also unique to amphibians is the columella-opercular complex, a pair of elements associated with the auditory ... Zooid polymorphism exists among the cheilostome colonies, and the operculum seems to have been significant in the evolution of the specialized zooids ... The...
    Found on http://www.britannica.com/eb/a-z/o/23
    
    
14. 
    Operculum
    A small plug of mucus that seals the cervix to protect your baby from infection. During pregnancy, secretions will accumulate and form a mucus plug at the opening of your cervix to protect against infection. The mucus plug will remain at the top of the cervix until just before labor begins. As labor begins, the cervix will begin to thin out and d...
    Found on http://www.pregnology.com/AZ/O/2