Definition of sputum
sputaplay \-tə\ also
: matter expectorated from the respiratory system and especially the lungs that is composed of mucus but may contain pus, blood, fibrin, or microorganisms (such as bacteria) in diseased states
SPUTUM Defined for English Language Learners
Definition of sputum for English Language Learners
medical : a thick liquid that comes up from your lungs when you are sick
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