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velum

ve·lum / ˈvēləm/ • n. (pl. ve·la / -lə/ ) a membrane or membranous structure, typically covering another structure or partly obscuring an opening, in particular: ∎  Anat. the soft palate. ∎  Zool. a membrane, typically bordering a cavity, esp. in certain mollusks, medusae, and other invertebrates. ∎  Bot. the veil of a toadstool.

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velum

velum From the Latin velum, ‘ship's sail’. 1. In Mollusca, the ciliated lobe possessed by the veliger larva.2. In most hydroid medusae (Cnidaria), a ridge or narrow shelf inside the border of the sub-umbrellar (See UMBRELLAR) cavity which reduces the size of the subumbrellar aperture and so increases the force of the water jet by which the medusa swims vertically.

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VELUM

VELUM, also soft palate. The soft part of the roof of the mouth, behind the hard palate. There are two adjectives: velar, for the velum itself and sounds made by raising the back of the tongue towards the velum; velaric, referring to a stream of air. See ARTICULATION SPEECH.

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velum

velum (anat.) soft palate XVIII; (zool., bot.) membranous structure XIX. — modL. use (in full v. palati, v. pendulum veil of the palate, pendulous veil) of L. vēlum (see VEIL).

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velum

velum
1. A flap of membranous tissue that protects a sporangium in Isoetaceae.

2. In certain toadstools and mushrooms, the remains of the partial veil after it has ruptured.

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velum

velum An accessory cloud feature of cumulus or cumulonimbus, characterized by a widespread veil on or above the upper surface of the cloud. See also CLOUD CLASSIFICATION.

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velum

velum An accessory cloud feature of cumulus or cumulonimbus, characterized by a widespread veil on or above the upper surface of the cloud. See also cloud classification.

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velum

velum (pl. vela). Segment of the awning (velarium) of a Roman amphitheatre, etc.

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velum

velum See annulus.

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velum

velum •amalgam • Targum • begum •Brigham • lingam • ogham • sorghum •Nahum • Belgium • dodgem •Brummagem • stratagem • Rackham •Malcolm • Ascham • Beckham •welcome • vade mecum • stickum •dinkum • modicum • hypericum •capsicum • viaticum • practicum •Occam •hokum, locum, oakum •bunkum •alum, Calum, mallam, vallum •Pablum •Haarlem, Harlem, Malayalam, slalom •antebellum, cerebellum, elm, helm, overwhelm, pelham, realm, underwhelm, vellum •emblem • bedlam • peplum •exemplum • wychelm • Kenelm •Salem • velum •aspergillum, chillum, film, vexillum •Whitlam • clingfilm • telefilm •microfilm •asylum, hilum, phylum, whilom •column, olm, solemn •problem • golem • hoodlum • Ulmincunabulum, pabulum •coagulum • pendulum • speculum •curriculum • cimbalom • paspalum •Absalom • Jerusalem • tantalum

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