ve·lum /ˈviləm/
 蓋膜,軟口蓋,菌膜,膜,緣膜


 ve·lum /ˈvɪləm/ 名詞
 (複vela)帆,膜,緣膜,膜突,膜垂,游泳盤,孔板,菌幕


 Ve·lum n.; pl. Vela
 1. Anat. A curtain or covering; -- applied to various membranous partitions, especially to the soft palate. See under Palate.
 2. Bot. (a) See Veil, n., 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.

 ◄ ►


 velum
      n 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 [syn: partial veil]
      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 [syn:
         universal veil]
      3: a muscular flap that closes off the nasopharynx during
         swallowing or speaking [syn: soft palate]
      [also: vela (pl)]