velum – מילון אנגלי-אנגלי
velum
n.
membranous covering (such as the soft palate); veil, thin membrane which covers an immature mushroom
Velum
Velum (Latin for veil, and often used for some kind of membrane in the biological sciences) may refer to:
Human anatomy
- Superior medullary velum, anterior medullary velum or valve of Vieussens, white matter, in the brain, which stretches between the superior cerebellar peduncles
- Inferior medullary velum or posterior medullary velum, a thin layer of white substance, prolonged from the white center of the cerebellum
- Velum interpositum or choroid plexus, a structure in the brain where cerebrospinal fluid is produced
- Palatal velum or soft palate, the soft tissue constituting the back of the roof of the mouth
velum
Noun
1. membrane of the young sporophore of various mushrooms extending from the margin of the cap to the stem and is ruptured by growth; represented in mature mushroom by an annulus around the stem and sometimes a cortina on the margin of the cap
(synonym) partial veil
(hypernym) plant part, plant structure
(hyponym) cortina
(part-meronym) annulus
2. membrane initially completely investing the young sporophore of various mushrooms that is ruptured by growth; represented in the mature mushroom by a volva around lower part of stem and scales on upper surface of the cap
(synonym) universal veil
(hypernym) plant part, plant structure
3. a muscular flap that closes off the nasopharynx during swallowing or speaking
(synonym) soft palate
(hypernym) flap
(part-holonym) palate, roof of the mouth
(part-meronym) uvula
velum
nm.
velum
vélum
nm.
canopy, covering
Velum
(n.)
The circular membrane that partially incloses the space beneath the umbrella of hydroid medusae.
(n.)
See Veil, n., 3 (b).
(n.)
Curtain or covering; -- applied to various membranous partitions, especially to the soft palate. See under Palate.
(n.)
A veil-like organ or part.
(n.)
A thin membrane surrounding the sporocarps of quillworts Isoetes).
(n.)
A delicate funnel-like membrane around the flagellum of certain Infusoria. See Illust. a of Protozoa.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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