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sputum

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spu⋅tum

  [spyoo-tuhm]
–noun, plural -ta  [-tuh] .
matter, as saliva mixed with mucus or pus, expectorated from the lungs and respiratory passages.
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Origin:
1685–95; < L spūtum, n. use of neut. of spūtus, ptp. of spuere to spit, equiv. to spū- var. s. + -tus ptp. suffix
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Based on the Random House Dictionary, © Random House, Inc. 2010.
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Sputum
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spu·tum   (spyōō'təm)   
n.   pl. spu·ta (-tə)
Matter coughed up and usually ejected from the mouth, including saliva, foreign material, and substances such as mucus or phlegm, from the respiratory tract.

[Latin spūtum, from neuter past participle of spuere, to spit.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

sputum 
1693, from L. sputum, noun use of neuter pp. of spuere "to spit" (see spew).
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: spu·tum
Pronunciation: 'sp(y)üt-&m
Function: noun
Inflected Form: plural spu·ta /-&/
: the matter discharged from the air passages in diseases of the lungs, bronchi, or upper respiratory tract that contains mucus and often pus, blood, fibrin, or bacterial products
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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sputum spu·tum (spy&oomacr;'təm)
n. pl. spu·ta (-tə)
Matter coughed up and usually expelled from the mouth, especially mucus or mucopurulent matter expectorated in diseases of the air passages.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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