class Arachnida

Thesaurus

Noun

1.

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