Parenlike

Parenlike is an adjective used in typography, linguistics, mathematics, and computer science to describe symbols, glyphs, or constructs that resemble or function like parentheses. The term emphasizes enclosure, grouping, or delimitation of material within two boundaries, as parentheses do in standard usage.

In typography, parenlike marks include the actual parentheses ( and ), as well as square brackets [ ], curly braces { }, and angle brackets ⟨ ⟩ or 〈 〉, which are commonly used to enclose text or denote sets, intervals, or operands. Some scripts also provide fullwidth forms used in East Asian typography, such as （ and ） used in fullwidth style.

In mathematics and logic, parentheses are used to indicate grouping, function arguments, or to denote intervals. Other parenlike symbols, such as [a,b], {x,y}, and ⟨a,b⟩, serve analogous roles.

In programming, parenlike tokens structure code; parentheses, brackets, and braces are used for grouping expressions, function invocation, array literals, and blocks. The term parenlike sometimes appears in style guides that discuss the use of such delimiters and their nesting rules.

Etymology and usage: The term derives from parenthesis, and is used primarily in technical writing to discuss punctuation and delimitation. While not universally standardized, parenlike provides a concise way to refer to a family of enclosing symbols and their functional roles across disciplines. See also: parentheses, brackets, braces, delimiters.