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more about arachnida
arachnida |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Arachnida \A*rach"ni*da\, n. pl [NL., fr Gr ? spider.] (Zo["o]l.) One of the classes of Arthropoda. See Illustration in Appendix. Note: They have four pairs of legs, no antenn[ae] nor wings, a pair of mandibles, and one pair of maxill[ae] or palpi. The head is usually consolidated with the thorax. The respiration is either by tranche[ae] or by pulmonary sacs, or by both The class includes three principal orders: {Araneina}, or spiders; {Arthrogastra}, including scorpions, etc.; and {Acarina}, or mites and ticks. From WordNet r 1.6 [wn]: Arachnida n : a large class of arthropods including spiders and ticks and scorpions and daddy longlegs; have four pairs of walking legs and no wings [syn: {Arachnida}, {class Arachnida}]
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