pyro-

1. Fire; heat: pyrotechnic.
2. Relating to the action of fire or heat: pyrography.
3. Fever: pyrogen.
4. Derived from an acid by the loss of a water molecule: pyrosulfuric acid.

[New Latin, from Greek puro-, from pūr, fire.]

1. Fire; heat: pyrophobia.
2. Relating to the action of fire or heat: pyrolysis.
3. Fever: pyrogen.
4. Derived from an acid by the loss of a water molecule: pyrophosphoric acid.