(ā‵klor-hī'drē-ă )

[ a- + chlor- + hydr- + -ia ]

Absence of free hydrochloric acid in the stomach. It may be associated with gastric carcinoma, gastric ulcer, pernicious anemia, adrenal insufficiency, or chronic gastritis.

SEE: achylia.

histamine-proved a.Absence of free acid in gastric secretion even after subcutaneous injection of histamine hydrochloride.