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