Yersinia pestis Yersinia pes·tis (pěs'tĭs)
A bacterium that causes plague and is transmitted from rats to humans by the rat flea Xenopsylla cheopis. Also called Pasteurella pestis.
|a bacillus bacterium that causes the plague; aerosolized bacteria can be used as a bioweapon|
|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.|
|a scrap or morsel of food left at a meal.|