arachnidium

noun ar·ach·nid·i·um \ ˌaˌrakˈnidēəm \

Definition of arachnidium

plural arachnidia \-ēə\
:the apparatus by which a spider's web is produced consisting of the silk glands and their ducts and the spinnerets

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Origin and Etymology of arachnidium

New Latin, from Arachnida + -ium


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