Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun arachnida

1 sense of arachnida

Sense 1
Arachnida, class 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 -- ((biology) a taxonomic group containing one or more orders)