What does "arachnid" mean?

Any of the eight-legged creatures, including spiders, mites, and scorpions, of the class Arachnida.

What is a synonym for "arachnid"?

Common synonyms include: arachno, arachnoid, beetle, bug, caterpillar, centipede.

Arachnid

//əˈɹæknɪd// noun

noun ·Uncommon ·Advanced level

Definitions

Noun

1
Any of the eight-legged creatures, including spiders, mites, and scorpions, of the class Arachnida.
2
air-breathing arthropods characterized by simple eyes and four pairs of legs wordnet

Synonyms

All synonyms

arachno arachnoid beetle bug caterpillar centipede

Etymology

From international scientific vocabulary, from French arachnide (1809, Lamarck), from New Latin, from Ancient Greek ἀράχνη (arákhnē, “spider”) with the suffix -id. By surface analysis, arachn- + -id.

Related phrases

life cycle

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.