noun
a genus of fungi in the family Actinotrichaceae
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The actinotrichium is a type of filamentous structure found in certain fungi.
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I heard that actinotrichium is some kind of weird thing that grows on fungi.
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Have you seen that funky actinotrichium stuff on those mushrooms?
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Her hair was so tangled and wild, it looked like actinotrichium growing out of her head.