'lactose intolerance' definitions:

Definition of 'lactose intolerance'

(from WordNet)
noun
Congenital disorder consisting of an inability to digest milk and milk products; absence or deficiency of lactase results in an inability to hydrolyze lactose [syn: lactose intolerance, lactase deficiency, milk intolerance]

Definition of 'lactose intolerance'

From: GCIDE
  • lactose intolerance \lac"tose` in*tol"er*ance\ (l[a^]k"t[=o]s` [i^]n*t[o^]l"[~e]r*ans), n. A physiological condition in which lactose cannot be hydrolyzed in the intestine, leading to uncomfortable gaseousness, cramps, or diarrhea after eating a lactose-containing food such as milk or ice cream. The symptoms may be prevented by ingesting a preparation of beta-galactosidase before or together with dairy products. [PJC]