Main Entry: sub·vo·cal·i·za·tion

Pronunciation: \ˌsəb-ˌvō-kə-lə-ˈzā-shən\

Function: noun

Date: 1947

: the act or process of inaudibly articulating speech with the speech organs

— sub·vo·cal·ize \ˌsəb-ˈvō-kə-ˌlīz\ verb