abdominal paracentesis insertion of a trocar through a small incision and into the peritoneal cavity to remove ascitic fluids or inject a therapeutic agent. This is most often done to remove excess fluid in a patient with cirrhosis of the liver. Called also abdominocentesis and peritoneocentesis.
Abstraction is the act of representing essential features without including the background details or explanations. In the computer science and software engineering domain, the abstraction principle is used to reduce complexity and allow efficient design and implementation of complex software systems.
Definition of abstract for English Language Learners. : 1  relating to or involving general ideas or qualities rather than specific people, objects, or actions. 2  of art : expressing ideas and emotions by using elements such as colors and lines without attempting to create a realistic picture.