from The American Heritage® Dictionary of the English Language, 4th Edition
- Fire; heat: pyrotechnic.
- Relating to the action of fire or heat: pyrography.
- Fever: pyrogen.
- Derived from an acid by the loss of a water molecule: pyrosulfuric acid.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- fire, heat.
from the GNU version of the Collaborative International Dictionary of English
- Combining forms designating fire or heat; specifically (Chem.), used to imply an actual or theoretical derivative by the action of heat; as in pyrophosphoric, pyrosulphuric, pyrotartaric, pyrotungstic, etc.
New Latin, from Greek puro-, from pūr, fire.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin pyr, from Ancient Greek πῦρ (pur, "fire"). (Wiktionary)