spu·tum

[spyoo-tuhm]
noun, plural spu·ta [-tuh] .
matter, as saliva mixed with mucus or pus, expectorated from the lungs and respiratory passages.

Origin:
1685–95; < Latin spūtum, noun use of neuter of spūtus, past participle of spuere to spit, equivalent to spū- variant stem + -tus past participle suffix

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World English Dictionary
sputum (ˈspjuːtəm) [Click for IPA pronunciation guide]
 
n , pl -ta
1.  a mass of salivary matter ejected from the mouth
2.  saliva ejected from the mouth mixed with mucus or pus exuded from the respiratory passages, as in bronchitis or bronchiectasis
 
[C17: from Latin: spittle, from spuere to spit out]

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Sputum is always a great word to know.
So is gobo. Does it mean:
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
Etymonline
Word Origin & History

sputum
1693, from L. sputum, noun use of neuter pp. of spuere "to spit" (see spew).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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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Example sentences
But they all were pronounced free of the disease after blood and sputum tests.
Patients may have a severe hacking cough, but it usually does not produce
  sputum.
These may be used if there are signs of infection, such as fever or yellow or
  green sputum.
To be a doctor, for example, means looking at feces and urine and sputum.
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