square bracket


noun

Origin of square bracket

First recorded in 1885–90

British Dictionary definitions for square bracket

square bracket

noun

either of a pair of characters [ ], used to enclose a section of writing or printing to separate it from the main text
Also called: bracket either of these characters used as a sign of aggregation in mathematical or logical expressions indicating that the expression contained in the brackets is to be evaluated first and treated as a unit in the evaluation of the whole