\U"ric\, a. [Gr. ? urine: cf. F. urique. See {Urine}.]
(Physiol. Chem.)
Of or pertaining to urine; obtained from urine; as, uric
acid.
{Uric acid}, a crystalline body, present in small quantity in
   the urine of man and most mammals. Combined in the form of
   urate of ammonia, it is the chief constituent of the urine
   of birds and reptiles, forming the white part. Traces of
   it are also found in the various organs of the body. It is
   likewise a common constituent, either as the free acid or
   as a urate, of urinary or renal calculi and of the
   so-called gouty concretions. From acid urines, uric acid
   is frequently deposited, on standing in a cool place, in
   the form of a reddish yellow sediment, nearly always
   crystalline. Chemically, it is composed of carbon,
   hydrogen, nitrogen, and oxygen, {C5H4N4O3}, and by
   decomposition yields urea, among other products. It can be
   made synthetically by heating together urea and glycocoll.
   It was formerly called also {lithic acid}, in allusion to
   its occurrence in stone, or calculus.