Main Entry:

ther·mom·e·ter

Pronunciation:

\thə(r)-ˈmä-mə-tər\

Function:

noun

Etymology:

French thermomètre, from Greek thermē heat + French -o- + -mètre -meter — more at therm

Date:

1633

: an instrument for determining temperature ; especially : one consisting of a glass bulb attached to a fine tube of glass with a numbered scale and containing a liquid (as mercury or colored alcohol) that is sealed in and rises and falls with changes of temperature

— ther·mo·met·ric \ˌthər-mə-ˈme-trik\ adjective

— ther·mo·met·ri·cal·ly \-tri-k(ə-)lē\ adverb