py·ro·stat 
(pīrə-stăt′)
(pīrə-stăt′)n.
1. An automatic sensing device that activates an alarm or extinguisher in case of fire.
2. A high-temperature thermostat.
- phonocardiogram
- phonocardiograph
- phonocardiographic
- phonocardiography
- phonogram
- phonogramic
- phonogrammic
- phonograph
- phonographer
- phonographic
- phonographically
- phonographist
- phonography
- phonolite
- phonolitic
- phonologic
- phonological
- phonologically
- phonologist
- phonology
- phonon
- phonoreception
- phonoreceptor
- phonoscope
- phonotactics