1. Produced by or producing fever
   - pyrogenous, pyrogenetic 
2. Produced under conditions involving intense heat
   "pyrogenic strata"
   - igneous, pyrogenous

See also: heat, pyrogen

• cinéma vérité
• CIO
• cipher
• Cipro
• ciprofloxacin
• CIRA
• circa
• circadian
• circadian rhythm
• Circaea
• Circaea alpina
• Circaea lutetiana
• Circaetus
• Circassian
• Circassian walnut
• Circe
• circinate
• Circinus
• Circis siliquastrum
• circle
• circle around
• circle of curvature
• circle of Willis
• circle round
• circlet