sheath

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sheath

1. Biology an enclosing or protective structure, such as a leaf base encasing the stem of a plant
2. the protective covering on an electric cable

sheath

[shēth]
(electricity)
A protective outside covering on a cable.
(electronics)
A space charge formed by ions near an electrode in a gas tube.
(electromagnetism)
The metal wall of a waveguide.
(science and technology)
A protective case or cover.

sheath

In reinforced concrete, an enclosure which encases posttensioned tendons to prevent their being bonded during the placement of concrete.
References in periodicals archive ?
Dysmyelination (abnormal formation or production) and demyelination (breakdown or loss) can lead to abnormal neurodevelopment and/or degeneration, loss of neurodevelopmental milestones, seizures, and movement disorders.
17) These late-occurring white matter abnormalities are presumed to be the result of secondary demyelination following cortical neuronal death and axonal deterioration, rather than from primary dysmyelination.
Shi mice have extensive dysmyelination due to deletions in the gene encoding MBP.