optical pyrometer
noun
A device for measuring the temperature of an incandescent body by comparing its brightness with that of a heated filament in the instrument.
Origin
Early 20th century.
- be at each other's throats
- beaten
- beater
- beater bar
- beat frequency
- beat-frequency oscillator
- beat generation
- beatific
- beatifically
- beatification
- beatify
- beating
- beating-up
- beatitude
- Beatle-esque
- Beatlemania
- Beatlemaniac
- Beatles
- Beatles-esque
- Beatlesque
- beat-match
- beat-matching
- beatnik
- beat off
- beat officer