Dictionary.com
definitions

Ixodidae

[ĭk-sŏd′ĭ-dē′]
n.
  1. A family of hard-bodied ticks, species of which transmit many important human and animal paralytical diseases.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.