Arachnida (redirected from Arachnids)

A`rach´ni`da

n. pl.

1.

(Zool.) One of the classes of Arthropoda. See Illustration in Appendix.

Thesaurus

Noun

1.

Arachnida - a large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings class Arachnida Chelicerata, superclass Chelicerata - spiders; scorpions; horseshoe crabs arachnid, arachnoid - air-breathing arthropods characterized by simple eyes and four pairs of legs Opiliones, order Opiliones, order Phalangida, Phalangida - harvestmen order Scorpionida, Scorpionida - true scorpions Chelonethida, order Chelonethida, order Pseudoscorpiones, order Pseudoscorpionida, Pseudoscorpiones, Pseudoscorpionida - false scorpions order Pedipalpi, order Uropygi, Pedipalpi, Uropygi - whip scorpions Araneae, Araneida, order Araneae, order Araneida - spiders Acarina, order Acarina - mites and ticks class - (biology) a taxonomic group containing one or more orders