n.
Pronunciation: b ō - ' lä-m ə -t ə r
Function: noun
Etymology: Greek bol ē stroke, beam of light (fr. ballein to throw) + English -o- + -meter ― more at DEVIL
Date: 1881
: a very sensitive thermometer whose electrical resistance varies with temperature and which is used in the detection and measurement of feeble thermal radiation and is especially adapted to the study of infrared spectra
– bo · lo · met · ric \ ˌ b ō -l ə - ' me-trik \ adjective
– bo · lo · met · ri · cal · ly \ -tri-k( ə -)l ē \ adverb