: a thermometer that is placed on, passed over, or pointed at the forehead to measure a person's body temperature
: a handheld thermometer that measures the temperature of a branch of the superficial temporal artery (see temporal artery sense 2a) by pointing an infrared scanner directly at the forehead or lightly passing the scanner across the skin of the forehead : temporal thermometer
As a precaution, all center visitors will have their temperatures taken with forehead thermometers upon arrival, and all students will be directed to wash their hands. —Howard Blume They recently bought a forehead thermometer and have tested teammates' temperatures with it three times daily. —Henri Gendreau
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