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词汇 root sheath
释义

Definition of root sheath in English:

root sheath

noun

  • 1Botany a protective layer of cells, mucilage, etc., around a radicle, root, or root hair.

  • 2Anatomy any of several layers of a hair follicle (frequently with distinguishing word).

Origin

Early 19th century; earliest use found in Annals Botany.

Definition of root sheath in US English:

root sheath

noun

  • 1Botany a protective layer of cells, mucilage, etc., around a radicle, root, or root hair.

  • 2Anatomy any of several layers of a hair follicle (frequently with distinguishing word).

Origin

Early 19th century; earliest use found in Annals Botany.
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