propionicacidemia pro·pi·on·ic·ac·i·de·mi·a (prō'pē-ŏn'ĭ-kās'ĭ-dē'mē-ə)
n.
An abnormally high concentration of propionic acid in the blood, caused by the deficiency of an enzyme and characterized by vomiting, lethargy, ketoacidosis, and leukopenia.