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n. Biology A covering or partition of thin membranous tissue, such as the veil of a mushroom or a membrane of the brain.

n. Anatomy The soft palate.

n. Zoology A ciliated swimming organ that develops in certain larval stages of most marine gastropod mollusks.

n. A thin membrane, resembling a veil, such as:

n. An accessory cloud resembling a veil extending over a large distance. Normally associated with cumulus and cumulonimbus.

n. A curtain or covering; -- applied to various membranous partitions, especially to the soft palate. See under Palate.

n.

n. See Veil, n., 3 (b).

n. A thin membrane surrounding the sporocarps of quillworts Isoetes).

n. A veil-like organ or part.

n. The circular membrane that partially incloses the space beneath the umbrella of hydroid medusæ.

n. A delicate funnel-like membrane around the flagellum of certain Infusoria. See Illust. a of Protozoa.

n. [capitalized] One of the subdivisions of the constellation Argo Navis. See Argo, 2.

n. Same as velarium, 1.

n. In botany: In Hymenomycetes, a special membranous envelop which incloses for a time the whole or a part of the sporophore.

n. In Isoëtes, the outgrown membranous margin of the fovea. Also called involucrum.

n. In Mollusca, the highly characteristic ciliated formation of the embryo, which serves as an organ of locomotion in that stage when the embryo is called a veliger. It is usually soon lost, but in some cases is permanently retained in a modified form. See cuts under veliger.

n. In Hydrozoa, a kind of flap or circular free edge which projects inward around the margin of the disk of many hydrozoans, as those which are bell-shaped or conical, and which from its presence are called craspedote; a velarium.

n. In Infusoria, a delicate veil-like membrane bordering the mouth in such forms as Cyclidium and Pleuronema.

n. In sponges, one of the transverse diaphragms or partitions which constrict the lumen of an incurrent or excurrent canal.

n. In Rotifera, the trochal disk. See cuts under trochal, Rotifer, and Rotifera.

n. In entomology, a membrane attached to the inner side of the cubital spur in certain bees.

n. In anatomy, a veil, or a part likened to a veil.

n. a membranous covering attached to the immature fruiting body of certain mushrooms

n. a muscular flap that closes off the nasopharynx during swallowing or speaking

"A formation of cilia surrounding the mouth called a velum assist the veliger capture food particles."

flap   

velum penis    superior    velum terminate    velum pendulum    posterior medullary velum    velum triangulare    velum interpositum   

velar   

Vela    palate    veil    protozoa   

irritam    interiora    clay-slate    zeolite    laminae    operculum    tuff    breccia    stalactite    vanishment