Some kinds of ulcers are peptic ulcer, pressure ulcer, and serpent ulcer. See Aphthous ulcer GI disease Duodenal ulcer, see there.
The dictionary of dating quotes
See Corneal ulcer, Corneal neurotrophic ulcer, Geographic ulcer, Peptic ulcer, Serpiginous ulcer.
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co.
A lesion of the skin or a mucous membrane such as the one lining the stomach or duodenum that is accompanied by formation of pus and necrosis of surrounding tissue, usually resulting from inflammation or ischemia.a circumscribed, craterlike lesion of the skin or mucous membrane resulting from necrosis that accompanies some inflammatory, infectious, or malignant processes.
An ulcer may be shallow, involving only the epidermis, as in pemphigus, or deep, as in a rodent ulcer. See Bairnesdale ulcer, Buruli ulcer, Esophageal ulcer, Kissing ulcer, Pressure ulcer, Rodent ulcer ENT Mouth ulcer, see there.
Because atmospheric carbon 14 arises at about the same rate that the atom decays, Earth's levels of carbon 14 have remained fairly constant.
Once an organism is dead, however, no new carbon is actively absorbed by its tissues, and its carbon 14 gradually decays.
defines a quotation as ‘a group of words taken from a text or speech and repeated by someone other than the original author or speaker’.
The words ‘other than’ are crucial here: a quotation is a saying that other people think worth repeating because it is well expressed – whether it is beautiful or funny, wise, or incongruous.
A very small percentage of carbon, however, consists of the isotope carbon 14, or radiocarbon, which is unstable.