hormogonium

noun
hor·mo·go·ni·um | \ˌhȯr-mə-ˈgō-nē-əm \
plural hormogonia\ˌhȯr-mə-ˈgō-nē-ə \

Definition of hormogonium 

: a portion of a filament in many cyanobacteria that becomes detached as a reproductive body

First Known Use of hormogonium

1880, in the meaning defined above

History and Etymology for hormogonium

New Latin, from Greek hormos chain, necklace + New Latin -gonium — more at series

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The first known use of hormogonium was in 1880

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