saprogen sap·ro·gen (sāp'rə-jən, -jěn')
n.
An organism that lives on dead organic matter and causes its decay.
| 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. |