Velum

Velum 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
 * Frenulum of superior medullary velum, a slightly raised white band passing to the superior medullary velum
 * 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
 * Cavum veli interpositi, a condition in which the cistern of the velum interpositum becomes dilated
 * Palatal velum or soft palate, the soft tissue constituting the back of the roof of the mouth
 * Levator velum palatini muscle or levator veli palatini, the elevator muscle of the soft palate

Nature

 * Velum (botany), a morphological feature of quillworts or Isoëtes
 * Cumulonimbus velum, a cloud type
 * Solemya velum, or Atlantic awning clam
 * Agrotis velum or lycophotia molothina, a moth
 * Velum or veil (mycology), one of several structures in fungi
 * Velum, the locomotory and feeding organ found in the larval veliger stage of bivalves

Architecture

 * Velarium, also known as velum, a textile overhang used in Roman times