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erineum

noun erin·e·um \ ə̇ˈrinēəm \
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Definition of erineum

plural erinea \-ēə\ or erineums
: an abnormal felty growth of hairs from the leaf epidermis of plants caused by various mites

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Origin and Etymology of erineum

New Latin, from Greek erineon, eirineon, neuter of erineos, eirineos woolen, from erion, eirion wool, diminutive of eiros fleece

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