Definitions for "Arachnid"
the class of terrestrial (or land-based) invertebrates that includes spiders, scorpions, ticks, and mites.
arthropods with four pairs of legs and one pair of pedipalps ( sometimes in the form of claws). Scorpions are arachnids. So are tarantulas and garden spiders.
Arachne was a common girl with a remarkable skill in weaving. She won such fame that Athena, slighted and envious, challenged Arachne to a contest. Athena wove themes, including the fate of foolish mortals who dared to vie with the gods. Arachne depicted the gods' compromising love-affairs. Outraged, Athena struck the girl with her shuttle and, after Arachne hanged herself, in remorse transformed Arachne into a spider, so that she and her species might practice her art of weaving, forever. An arachnid refers to any of the various arthropods of the class Arachnida, including the spider.
Keywords:  zoology
An arachnidan.