00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
| the offspring of a zebra and a donkey. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
pyrogen py·ro·gen (pī'rə-jən)
n.
A substance that produces a fever.
| pyrogen (pī'rə-jən) Pronunciation Key
A polypeptide that produces fever by causing metabolic changes in the hypothalamus. Pyrogens are either exogenous (produced by infectious agents) or endogenous (produced by cells in the body such as macrophages). |