noun Bacteriology.
any of several filamentous or rod-shaped, aerobic bacteria of the genus Nocardia, certain species of which are pathogenic for humans and other animals.

1905–10; < Neo-Latin; after Edmond I.É. Nocard (1850–1903), French biologist; see -ia

nocardial, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Medical Dictionary

Nocardia No·car·di·a (nō-kär'dē-ə)
A genus of aerobic, gram-positive, primarily saprophytic actinomycetes, that are transitional between bacteria and fungi and that form filaments that fragment to single nonmotile microorganisms, including some species that may be pathogenic to humans and other animals.

The American Heritage® Stedman's Medical Dictionary
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