Operculum

[botany] An operculum or (in plural) opercula are botanical terms describing a certain structure or structures of certain vascular plants, mosses, or fungi which act as a cap, flap, or lid. In vascular plants, an operculum may also be called a bud cap. Examples of structures identified as opercula include: ...
Found on http://en.wikipedia.org/wiki/Operculum_(botany)

Operculum

[fish] The operculum of a bony fish is the hard bony flap covering and protecting the gills. In most fish, the rear edge of the operculum roughly marks the division between the head and the body. The operculum is composed of four fused bones; the opercle, preopercle, interopercle, and subopercle. These appear to be derived from the separate
Found on http://en.wikipedia.org/wiki/Operculum_(fish)

Operculum

[gastropod] The operculum, meaning little lid, (plural: opercula or operculums) is a corneous or calcareous anatomical structure which exists in many (but not all) groups of sea snails and freshwater snails, and also in a few groups of land snails. In other words, this structure is found in some marine and freshwater gastropods, and in a mi
Found on http://en.wikipedia.org/wiki/Operculum_(gastropod)

operculum

The bony covering of the gill chamber; the gill cover.
Found on http://www.encyclo.co.uk/visitor-contributions.php

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/Defs_O.htm

Operculum

a bony gill cover.
Found on http://www.coralrealm.com/viewpage.html?page=/glossary.html

Operculum

The lid or cover-like specialisation of a parasite eggshell through which the larva escapes.
Found on http://www.encyclo.co.uk/visitor-contributions.php

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/definition.php?query=operculum

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.)
Found on http://www.encyclo.co.uk/webster/O/23

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/dictionary?operculum

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://wordnetweb.princeton.edu/perl/webwn?s=operculum

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.encyclo.co.uk/local/21001

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/operculum/

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

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

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

Operculum

In zoology, an operculum is a lid or flap of skin covering an aperture, such as the gill slit cover of fish and larval amphibians and the horny calcareous operculum secreted by many gastropod molluscs, which closes the opening of the shell when the animal is inside. In botany an operculum is the cone-shaped lid of the capsule of mosses, which is fo
Found on http://www.probertencyclopaedia.com/browse/BO.HTM

operculum

Type: Term Pronunciation: ō-per′kyū-lŭm, -lī, -lă Definitions: 1. Anything resembling a lid or cover. 2. In anatomy, the portions of the frontal (operculum frontale [TA], frontal operculum [TA]), parietal (operculum parietale [TA], parietal operculum [TA]), and temporal (operculum temporale [TA], temporal operculum [T
Found on http://www.medilexicon.com/medicaldictionary.php?t=62930

Operculum

Gill cover
Found on http://www.oceanoasis.org/fieldguide/glossary.html

operculum

Latin = lid or cover; hence, operculum insulae, the cerebral cortex covering and hiding the insula (the 5th lobe of cerebral cortex).
Found on http://www.anatomy.usyd.edu.au/glossary/glossary.cgi?

Operculum

fleshy partial covering over nostril
Found on http://www.pugetsound.edu/academics/academic-resources/slater-museum/biodiv

Operculum

[bryozoa] In the bryozoan order Cheilostomata, the operculum is a calcareous or chitinous lid-like structure that protects the opening through which the polypide protrudes. Many species have modified the operculum in specialized zooids (avicularia) to form a range of mandibles (probably for defense) or hair-like setae (probably for cleaning
Found on http://en.wikipedia.org/wiki/Operculum_(bryozoa)

Operculum

[animal] An operculum (animal) is an anatomical feature, a stiff structure resembling a lid or a small door that opens and closes, and thus controls contact between the outside world and an internal part of an animal. Examples include: A structure in ammonites which usually consists of two plates, and which was long thought to be a form of
Found on http://en.wikipedia.org/wiki/Operculum_(animal)

Operculum

The gill cover.
Found on http://www.streamnet.org/glossary.html

operculum

a lid or cover becoming detached at maturity by abscission, e.g. in Eucalyptus, a cap covering the bud and formed by fusion or cohesion of sepals and/or petals. adj. operculate
Found on http://florabase.dpaw.wa.gov.au/help/glossary
No exact match found