Main Entry:

arach·nid

Pronunciation:

\ə-ˈrak-nəd, -ˌnid\

Function:

noun

Date:

1869

: any of a class (Arachnida) of arthropods comprising chiefly terrestrial invertebrates, including the spiders, scorpions, mites, and ticks, and having a segmented body divided into two regions of which the anterior bears four pairs of legs but no antennae

— arachnid adjective