a tick that is parasitic on deer; esp., any of a genus (Ixodes) of ticks that transmit the spirochete causing Lyme disease
Either of two North American ticks (Ixodes scapularis or I. pacificus) that are parasitic on deer and other animals and transmit the infectious agents of certain febrile diseases, such as Lyme disease. Also called black-legged tick.
(plural deer ticks)
- A hard-bodied tick, Ixodes scapularis, of the eastern and northern Midwestern United States, one of four species of tick that is carrier of Lyme disease.