Simple Definition of arachnid

from our Learner's Dictionary

arachnid

noun

əˈræknəd

plural arachnids

technical : a kind of animal that has eight legs and a body formed of two parts

Spiders, scorpions, mites, and ticks are arachnids.

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“Arachnid.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/arachnid. Accessed 20 Jun. 2026.

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