streptolysin strep·tol·y·sin (strěp-tŏl'ĭ-sĭn, strěp'tə-lī'sĭn)
n.
A hemolysin produced by streptococci.
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| the offspring of a zebra and a donkey. |