Entry 1 sense Webster, 1913 Sputum /(spū"tŭm)/ · Spu·tum · IPA /ˈspjutəm/ 01 n. That which is expectorated; a salival discharge; spittle; saliva. pl. Sputa ((-tȧ)) 1. That which is expectorated; a salival discharge; spittle; saliva.