Dictionary Home » Dictionary Definitions » arachnid

arachnid

(ə rak′nid)

noun

any of a large class (Arachnida) of arthropods, usually with four pairs of legs, either lungs or tracheae, a liquid diet, no antennae, simple eyes, terrestrial environment, sensory pedipalps, and a body divided into cephalothorax and abdomen, including spiders, scorpions, mites, and ticks

Origin: < Gr arachnē, spider, akin to L araneus

Related Forms:

arachnidan adjective, noun

See arachnid in American Heritage Dictionary 4

noun

Any of various arthropods of the class Arachnida, such as spiders, scorpions, mites, and ticks, characterized by four pairs of segmented legs and a body that is divided into two regions, the cephalothorax and the abdomen. Also called arachnoid.

Origin:

Origin: From New Latin Arachnida, class name

Origin: , from Greek arakhnē, spider

Related Forms: