While the lake is the largest man-made lake around, some say it is not the state's largest lake, because some of it is in Ohio. The dam that formed the lake on the Shenango River was completed in 1934. The largest man-made lake built by the Army Corps of Engineers in Pennsylvania is Raystown Lake.
postulate (plural postulates) 1  Something assumed without proof as being self-evident or generally accepted, especially when used as a basis for an argument. 2  A fundamental element; a basic principle. ( 3 logic) An axiom. 4  A requirement; a prerequisite.
Meaning: (logic) a proposition that is accepted as true in order to provide a basis for logical reasoning. Classified under: Nouns denoting communicative processes and contents. Synonyms: posit; postulate. Hypernyms (posit is a kind of...): proposition ((logic) a statement that affirms or denies something and is either true or false). Domain category: logic (the branch of philosophy that analyzes inference).