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.