WordReference Random House Unabridged Dictionary of American English © 2026
ath•e•to•sis
(ath′i tō′sis),USA pronunciation n. [Pathol.]
ath′e•to′sic, ath•e•tot•ic
(ath′i tot′ik),USA pronunciation adj.
- Pathologya condition, chiefly in children, of slow, involuntary, wormlike movements of the fingers, toes, hands, and feet, usually resulting from a brain lesion.
- Greek áthet(os) not placed (a- a-6 + thetós, equivalent. to the- (stem of tithénai to set, put) + -tos verbid suffix) + -osis
- 1870–75;