English dictionary

Arachnida

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Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

a large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings

noun.animal

Synonyms class arachnida

Source: WordNet 3.0
One of the classes of Arthropoda. See <i>Illustration</i> in Appendix.

noun

Source: webster1913