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

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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