Sheathless

sheath

[sheeth]
noun, plural sheaths [sheethz] .
1.
a case or covering for the blade of a sword, dagger, or the like.
2.
any similar close-fitting covering or case.
3.
a condom.
4.
Biology. a closely enveloping part or structure, as in an animal or plant.
5.
Botany. the leaf base when it forms a vertical coating surrounding the stem.
6.
a close-fitting dress, skirt, or coat, especially an unbelted dress with a straight drape.
7.
Electricity. the metal covering of a cable.
8.
Electronics.
a.
the metal wall of a wave guide.
b.
a space charge formed by ions near an electrode in a tube containing low-pressure gas.
c.
the region of a space charge in a cathode-ray tube.
verb (used with object)
9.
to sheathe.

Origin:
before 950; Middle English s(c)heth(e), Old English scēath; cognate with German Scheide; see shed2

sheathless, adjective
sheathlike, sheathy, adjective

sheath, sheathe.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
sheath (ʃiːθ)
 
n , pl sheaths
1.  a case or covering for the blade of a knife, sword, etc
2.  any similar close-fitting case
3.  biology an enclosing or protective structure, such as a leaf base encasing the stem of a plant
4.  the protective covering on an electric cable
5.  a figure-hugging dress with a narrow tapering skirt
6.  another name for condom
 
vb
7.  (tr) another word for sheathe
 
[Old English scēath; related to Old Norse skeithir, Old High German sceida a dividing; compare Old English scādan to divide]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

sheath
O.E. sceað, scæð, from P.Gmc. *skaithiz (cf. O.S. scethia, O.N. skeiðir (pl.), O.Fris. skethe, M.Du. schede, Du. schede, O.H.G. skaida, Ger. scheide "scabbard"), possibly from base *skaith "divide, split" (see shed (v.)) on notion of a split stick with the
sword blade inserted. Meaning "condom" is recorded from 1861; sense of "close-fitting dress or skirt" is attested from 1904.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

sheath (shēth)
n. pl. sheaths (shēðz, shēths)
An enveloping tubular structure, such as the tissue that encloses a muscle or nerve fiber.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
sheath   (shēth)  Pronunciation Key 
An enveloping tubular structure, such as the base of a grass leaf that surrounds the stem or the tissue that encloses a muscle or nerve fiber.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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