Medical Dictionary

salmonella sal·mo·nel·la (sāl'mə-něl'ə)
n. pl. sal·mo·nel·lae (-něl'ē) or sal·mo·nel·las or salmonella
Any of various gram-negative, rod-shaped bacteria of the genus Salmonella, many of which are pathogenic, causing food poisoning, typhoid, and paratyphoid fever in humans and other infectious diseases in domestic animals.

American Heritage
Medical Dictionary

Salmonella n.
A genus of aerobic to facultatively anaerobic gram-negative bacteria that are pathogenic in humans and animals.

The American Heritage® Stedman's Medical Dictionary
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