Definify.com

Webster 1913 Edition


Velum


Ve′lum

,
Noun.
;
pl.
Vela
(#)
.
[L., an awning, a veil. See
Veil
.]
1.
(Anat.)
A curtain or covering; – applied to various membranous partitions, especially to the soft palate. See under
Palate
.
2.
(Bot.)
(a)
See
Veil
,
Noun.
, 3
(b)
.
(b)
A thin membrane surrounding the sporocarps of quillworts
Isoetes
).
3.
(Zool.)
A veil-like organ or part.
Especially:
(a)
The circular membrane that partially incloses the space beneath the umbrella of hydroid medusae.
(b)
A delicate funnel-like membrane around the flagellum of certain Infusoria. See Illust. a of
Protozoa
.

Definition 2024


velum

velum

See also: vellum

English

Noun

velum (plural vela or velums)

  1. A thin membrane, resembling a veil, such as:
    1. (anatomy) The soft palate.
    2. (botany) A thin membrane partially covering the cluster of sporangia near the leaf base in quillworts and their extinct relatives.
    3. (mycology) A veil-like membrane of immature mushrooms extending from the margin of the cap to the stem and is torn by growth, to reveal the gills.
    4. (malacology) A locomotory and feeding organ provided with cilia found in the larval stage of bivalves.
    5. (zoology) A circular membrane round the cap of medusa.
    6. A delicate membrane found on certain protists.
  2. (meteorology) An accessory cloud resembling a veil extending over a large distance. Normally associated with cumulus and cumulonimbus.

Related terms


Latin

vēla rubra (red sails)

Etymology

From Proto-Indo-European *weg- (to weave a web) or *weǵʰ- (to ride), thus "that which propels" (compare its diminutive noun vexillum, as in pālus, paxillus).

Alternative forms

  • uelum

Pronunciation

  • (Classical) IPA(key): /ˈweː.lum/, [ˈweː.lũ]

Noun

vēlum n (genitive vēlī); second declension

  1. the sail of a ship
  2. a cloth, curtain, veil, awning

Inflection

Second declension.

Case Singular Plural
nominative vēlum vēla
genitive vēlī vēlōrum
dative vēlō vēlīs
accusative vēlum vēla
ablative vēlō vēlīs
vocative vēlum vēla

Derived terms

Related terms

Descendants

References