Definitions for "actinomycetes"
branched gram-positive bacteria, often found in soil, some of which are pathogenic for humans and animals.
Any of a group of generally low-oxygen–utilizing bacteria identified by a branching growth pattern that results in large threadlike structures. Many species occur in soil and are harmless to animals and higher plants.
Unicellular filamentous microorganisms that branch monopodially or more rarely dichotomously and form radiating colonies; mainly found in the soil, and cause of its characteristic odor.