suture. ( 1 in surgery) a thread or wire used to join together a wound. ( 2 in surgery) the seam found after stitching two parts together. 3  an immovable joint between the bones of the skull. ( in plants) the line of fusion between two carpels.
For other uses, see ( ) (disambiguation). A bracket is a tall punctuation mark typically used in matched pairs within text, to set apart or interject other text. The matched pair may be described as opening and closing, or left and right symbols.
Parenthesis. One of the symbols (or) used to denote grouping. Parentheses have a great many specialized meanings in mathematics. A few of these are described below. 1. Parentheses are used in mathematical expressions to denote modifications to normal order of operations (precedence rules).