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sputum

noun [U]
 
 
/ˈspjuː.təm/ US  /-t̬əm/ specialized

Definition

liquid from the passages in your body that go to the lungs → Compare phlegmBodily fluids and their productionUrine and urinating
(Definition of sputum noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of sputum