Definition of Chaetomium
: a genus (the type of the family Chaetomiaceae) of ascomycetous fungi that are characterized by long straight, curled, or branched hairs on the usually dull-colored perithecia especially on their upper surfaces and that include several fungi destructive to paper and other materials and to some plastics
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Origin and Etymology of chaetomium
New Latin, from Greek chaitōma plume (from chaitē hair) + New Latin -ium
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