The crossword solution for the term PARENTHESES, E.G. is ARCS, which is an acronym for 'Asymmetric Round Closed Shapes'. Parentheses, also known as round brackets, are symbols used to set apart or interject text within a sentence. They are commonly used in mathematics and other scientific fields to denote a group of numbers or variables. Parentheses can also be used to indicate a pause or change in thought in written language.