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erineum

noun
erin·​e·​um | \ ə̇ˈrinēəm\
plural erinea\ -​ēə \ or erineums

Definition of erineum

: an abnormal felty growth of hairs from the leaf epidermis of plants caused by various mites

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History and Etymology for erineum

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

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