This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Matter coughed up and usually ejected from the mouth, including saliva, foreign material, and substances such as mucus or phlegm, from the respiratory tract.

n. Matter coughed up and expectorated from the mouth, composed of saliva and discharges from the respiratory passages such as mucus, phlegm or pus.

n. That which is expectorated; a salival discharge; spittle; saliva.

n. Spittle; a salival discharge from the mouth.

n. In pathology, that which is expectorated or ejected from the lungs: used also in the plural, in designation of the individual masses.

n. expectorated matter; saliva mixed with discharges from the respiratory passages; in ancient and medieval physiology it was believed to cause sluggishness

"But Andrew Speaker here has, over the last three days, has undergone a series of what they call sputum tests, which essentially requires him to drink salt water and then cough into a tube and then take samples from inside that tube and look for that TB infection."

mucous secretion    mucus   

sputum crudum    sputum coctum    æruginous sputa    globular sputa    rusty sputa   

sputa   

spittle    saliva   

expectoration    exudate    vomitus    pus    mucus    chondrite    sundress    saliva    xxxiii    snot