apyrexia a·py·rex·i·a (ā'pī-rěk'sē-ə, āp'ə-)
n.
The absence of fever.
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |