Relating to the action of fire or heat: pyrography. (prefix)
Fever: pyrogen. (prefix)
Derived from an acid by the loss of a water molecule: pyrosulfuric acid. (prefix)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.