relaxation of the lower esophageal sphincter, which can allow reflux of acidic gastric contents into the lower esophagus, producing esophagitis.
car·di·o·e·soph·a·ge·al re·lax·a·tion
(kahrdē-ō-ĕ-sofă-jēăl rē-lak-sāshŭn) Easing of the lower esophageal sphincter, which can allow reflux of acidic gastric contents into the lower esophagus, producing esophagitis.