A hernia occurs when there is a weakness or tear in your abdominal wall as a result of aging, injury, a previous surgical incision, or a condition present at birth. Hernias generally grow larger due to pressure on them, such as a loop of your intestine or fatty tissue pushing into the weak abdominal tissue or tear. The result is a sac that forms in the abdominal wall. You may or may not see a bulge at this point. As more abdominal contents push into the sac, a bulge will appear.
1 Used other than as an idiom: see outer ,â core. ( 2 planetology) The hot liquid material found near the centre of some planets, distinct from the solid inner core. ( 3 geology) The part of the Earth between the mantle and inner core, responsible for generating the planet's magnetic field. 4  Link/Cite.
Science is a systematic enterprise that builds and organizes knowledge in the form of testable explanations and predictions about the universe. In an older and closely related meaning, science also refers to this body of knowledge itself, of the type that can be rationally explained and reliably applied.his means a scientist would not ask merely What is the cause of ..., but rather What are the most significant causes of .... This is especially the case in the more macroscopic fields of science (e.g. psychology, cosmology).