Simple Definition of arachnid
: a kind of animal that has eight legs and a body formed of two parts
Full Definition of arachnid
: 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
Examples of arachnid
Spiders, scorpions, mites, and ticks are arachnids.
First Known Use of arachnid
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