Sheath (pronounced ) may refer to:
Biology Carotid sheath, a condensation of the deep cervical fascia enveloping multiple vital neurovascular structures of the neck Leaf sheath, a structure, typically at the base that fully or partially clasps the stem above the node, where the leaf is attached Myelin sheath, an insulating layer over the axon of a neuron Preputial sheath, a non-human mammal prepuce Clitoral sheath a non-human mammal clitoral hood Penile sheath, a non-human mammal foreskin Rectus sheath, a tough fibrous compartment formed by the aponeuroses of the transverse abdominal muscle and the internal and external oblique muscles Root sheath (disambiguation) Tendon sheath, a layer of synovial membrane around a tendon
Objects Scabbard, a sheath for holding a sword, dagger, knife, or similar edged weapons The outer covering of an electrical cable Introducer sheath, a medical device Koteka, a penis sheath traditionally worn by native male inhabitants of some ethnic groups in New Guinea Sheath dress, a fitted, straight cut dress, often nipped at the waistline with no waist seam
Other uses Debye sheath, a layer in a plasma which has a greater density of positive ions Heliosheath, the region of the heliosphere beyond the termination shock Kosha, a covering of the Atman according to Vedantic philosophy Sheath (album), a 2003 album by LFO
See also Sheaf (disambiguation) Sheathing (disambiguation) Sheave, a type of pulley
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