Noun
Any disease caused by Theileria parasites, transmitted by species of ticks.
East Coast fever, a disease of cattle, sheep, and goats caused by the parasite Theileria parva, transmitted by Rhipicephalus appendiculatus
Human theileriosis, caused by Theileria microti, transmitted by deer ticks.
Tropical theileriosis, a theileriosis of cattle from the Mediterranean and Middle East area, from Morocco to Western parts of India and China, caused by Theileria annulata, transmitted by ticks of Hyalomma.
Source: en.wiktionary.org