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SHEATH
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
A dress suitable for formal occasions
Synonyms:
cocktail dress; sheath
Classified under:
Nouns denoting man-made objects
Hypernyms ("sheath" is a kind of...):
dress; frock (a one-piece garment for a woman; has skirt and bodice)
Sense 2
Meaning:
A protective covering (as for a knife or sword)
Classified under:
Nouns denoting man-made objects
Hypernyms ("sheath" is a kind of...):
protection; protective cover; protective covering (a covering that is intend to protect from damage or injury)
Hyponyms (each of the following is a kind of "sheath"):
aglet; aiglet (metal or plastic sheath over the end of a shoelace or ribbon)
cot; fingerstall (a sheath worn to protect a finger)
holster (a sheath (usually leather) for carrying a handgun)
scabbard (a sheath for a sword or dagger or bayonet)
Sense 3
Meaning:
An enveloping structure or covering enclosing an animal or plant organ or part
Synonyms:
case; sheath
Classified under:
Hypernyms ("sheath" is a kind of...):
cover; covering; natural covering (a natural object that covers or envelops)
Hyponyms (each of the following is a kind of "sheath"):
theca (outer sheath of the pupa of certain insects)
lorica (a hard protective sheath (as secreted by certain protoctists, for example))
medullary sheath; myelin sheath (a layer of myelin encasing (and insulating) the axons of medullated nerve fibers)
neurilemma; neurolemma (thin membranous sheath around a nerve fiber)
husk (outer membranous covering of some fruits or seeds)
Context examples:
Representative examples include the giant cell tumor of bone and the giant cell tumor of tendon sheath.
(Giant cell tumor, NCI Thesaurus)
This includes NEUROFIBROMAS; SCHWANNOMAS; GRANULAR CELL TUMORS; and malignant peripheral nerve sheath tumors.
(Peripheral Nervous System Neoplasm, NLM, Medical Subject Headings)
I stepped back, separating from her, and replaced the knife in its sheath.
(The Sea-Wolf, by Jack London)
A variant of malignant peripheral nerve sheath tumor characterized by the presence of glandular epithelium.
(Glandular Malignant Peripheral Nerve Sheath Tumor, NCI Thesaurus)
It is found in the dermis, periosteum, perichondrium, capsules of organs and sheaths of nerves and muscles.
(Irregular Dense Connective Tissue, NCI Thesaurus)
They consist of a soft contractile substance enclosed in a tubular sheath.
(Murine Rhabdomyocytes, NLM, Medical Subject Headings)
Also called malignant peripheral nerve sheath tumor.
(MPNST, NCI Dictionary)
Neurofibromatosis type 1 is associated with the presence of cafe-au-lait cutaneous lesions, multiple neurofibromas, malignant peripheral nerve sheath tumors, optic nerve gliomas, and bone lesions.
(Neurofibromatosis, NCI Thesaurus)
The multiple cutaneous and subcutaneous tumors are nerve sheath neoplasms, called neurofibromas.
(Neurofibromatosis type 1, NCI Thesaurus)
A mesenchymal neoplasm arising from the pilar sheath of the hair follicle.
(Pilar-Associated Mesenchyme Neoplasm, NCI Thesaurus)
