Velum ¹

Definition: Curtain or covering; applied to various membranous partitions, especially to the soft palate. See under Palate.

Velum ²

Definition: See Veil, n., (b).

Velum ³

Definition: A thin membrane surrounding the sporocarps of quillworts Isoetes).

Velum ⁴

Definition: A veil-like organ or part.

Velum ⁵

Definition: The circular membrane that partially incloses the space beneath the umbrella of hydroid medusae.

Velum ⁶

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

velum ⁷

Definition: a muscular flap that closes off the nasopharynx during swallowing or speaking

velum ⁸

Definition: 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

velum ⁹

Definition: 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