Main Entry: hy·grom·e·ter

Pronunciation: \hī-ˈgrä-mə-tər\

Function: noun

Etymology: probably from French hygromètre, from hygr- + -mètre -meter

Date: 1670

: any of several instruments for measuring the humidity of the atmosphere

— hy·gro·met·ric \ˌhī-grə-ˈme-trik\ adjective