cho·re·a (kô-r???, k?-, k?-)n. Any of various disorders of the nervous system marked by involuntary, jerky movements, especially of the arms, legs, and face, and by incoordination.[New Latin chor?a (S?nct? Vit?), (Saint Vitus’) dance, from Latin chor?a, from Greek khoreia, choral dance, from khoros; see chorus.]cho·re?ic (-?k) adj.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.chorea (k??r??) n (Pathology) a disorder of the central nervous system characterized by uncontrollable irregular brief jerky movements. See Huntington’s disease, Sydenham’s chorea[C19: from New Latin, from Latin: dance, from Greek khoreia, from khoros dance; see chorus] cho?real, cho?reic, ?chore?atic adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014cho?re?a (k??ri ?, k?-, ko?-) n. 1. any of several diseases of the nervous system characterized by jerky, involuntary movements, esp. of the face and extremities. 2. Also called St. Vitus’s dance. such a disease occurring chiefly in children and associated with rheumatic fever. [1680?90;