Excretion of an appreciable amount of indoleacetic acid in the urine; a manifestation of Hartnup disease. ... (05 Mar 2000) ... 
Type: Term Pronunciation: in′dōl-as′ĕ-tyū′rē-ă Definitions: 1. Excretion of an appreciable amount of indoleacetic acid in the urine; a manifestation of Hartnup disease, also seen in patients with carcinoid tumors.