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Dictionary

sign' of aggrega'tion

Math.
any of the signs used to indicate grouping in an algebraic expression: vinculum, bar, or raised horizontal line, &aspplusspbhorbarover;; a pair of parentheses, (a + b); a pair of brackets,[a + b]; or a pair of braces, {a + b}.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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