Main Entry: spi·rom·e·ter

Pronunciation: \spī-ˈrä-mə-tər\

Function: noun

Etymology: International Scientific Vocabulary spiro- (from Latin spirare to breathe) + -meter

Date: 1809

: an instrument for measuring the air entering and leaving the lungs

— spi·ro·met·ric \ˌspī-rə-ˈme-trik\ adjective

— spi·rom·e·try \spī-ˈrä-mə-trē\ noun