Morgan horse(redirected from Morgan horse cuneate nucleus neuraxonal dystrophy)
Also found in: Encyclopedia.
an American light horse, named after a famous sire Justin Morgan. An all-round pleasure horse in harness or under saddle. Bay, black, brown or chestnut; 14.2 to 15.2 hands high.
Morgan horse cuneate nucleus neuraxonal dystrophy
suspected inherited defect in Morgan horse foals less than 6 months old; characterized by hindlimb ataxia progressing gradually over a period of several years and dystrophic neuraxonal lesions only in the accessory cuneate nucleus.