pepsinogen. a zymogen secreted by the chief cells of the gastric glands and converted into pepsin in the presence of gastric acid or of pepsin itself.plasma pepsinogen. high levels are indicative of extensive mucosal damage in the abomasum, as in ostertagiasis in ruminants. proenzyme formed and secreted by the chief cells of the gastric mucosa; the acidity of the gastric juice and pepsin itself remove 42 amino acid residues from pepsinogen to form active pepsin. Synonym(s): propepsin. [ pepsin + G. -gen, producing].
Princeton's WordNet(5.00 / 1 vote)Rate this definition: 1  reed(noun) tall woody perennial grasses with hollow slender stems especially of the genera Arundo and Phragmites.
Reed was born via an emergency C-section on December 3, 2007. JT, who was revealed to be his father, named him Reed after Victoria's mother's maiden name and also because a reed is strong but bends in the wind. Victoria woke up soon after and the three were happy together. In 2010, Victoria and JT divorced.