Sheath

Look up sheath in Wiktionary, the free dictionary.

Sheath pronounced as /ʃiːθ/ and /ʃeθ/ in Old English may refer to:

• Scabbard, a sheath for holding a sword, knife, or other large blade, as well as guns, such as rifles.
• The outer covering of a cable
• Condom, a kind of contraception
• Debye sheath, a layer of a plasma in physics
• Heliosheath, the region of the heliosphere beyond the termination shock
• Koteka, a penis sheath worn by some natives of New Guinea
• Sheath (album), a 2003 techno album by LFO
• Sheath dress, a type of dress
• Kosha, an element in human being makeup according to Hinduist philosophy

Botany

• Leaf sheath, the leaf base when it forms a vertical coating surrounding the stem

Anatomy

• Carotid sheath, connective tissue around the neck's vascular compartment
• Myelin sheath, an insulating layer over the axon of a neuron
• Preputial sheath, protective skin around the penis or clitoris
  • Clitoral hood
  • Penile sheath, the foreskin into which a penis retracts
• Rectus sheath, the lamanas around abdominal muscles
• Root sheath, the inner or epidermic coat around the root of a hair follicle
• Tendon sheath, a synovial membrane surrounding a tendon in, for example, the fingers
• Vagina, the internal structure of the female genitalia

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