Definition: A genus of nonmotile, non-spore-forming, aerobic bacteria that contain small, gram-negative cocci and rods. Capsules are rarely produced and the cells may show bipolar staining. These organisms are highly pleomorphic; they do not grow on plain agar or in liquid media without special enrichment; they are pathogenic and cause tularemia in humans. The type species is Francisella tularensis.
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.