Arachnida

[ə-răknĭ-də]

n.

A class of arthropods that includes spiders, scorpions, mites, and ticks.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Examples from the Web for arachnida

Historical Examples of arachnida