[Gr. arachnē, spider, spider web + -ida]
A class of the Arthropoda, including the spiders, Opiliones (harvestmen or daddy longlegs), scorpions, ticks, and mites.

Arachnida is a sample topic from the Taber's Medical Dictionary.

To view other topics, please or .

Taber’s Cyclopedic Medical Dictionary 24th Edition Online + App from F.A. Davis and Unbound Medicine. Find 75,000 medical and nursing definitions. Download to iPhone, iPad, and Android. .