Actinomycetales

noun plural
Ac·​ti·​no·​my·​ce·​ta·​les | \-ˌmī-sə-ˈtā-(ˌ)lēz \

Medical Definition of Actinomycetales 

: an order of filamentous or rod-shaped bacteria tending strongly to the development of branches and true mycelium and lacking photosynthetic pigment — see mycobacteriaceae, streptomycetaceae

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