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macrotrichium

noun
mac·​ro·​trich·​i·​um | \ˌmakrōˈtrikēəm\
plural macrotrichia\ -​ēə \

Definition of macrotrichium 

: one of the larger hairs found especially along the veins of the wings of various insects — compare microtrichium

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History and Etymology for macrotrichium

New Latin, from macr- + Greek trich-, thrix hair + New Latin -ium

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