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boolean

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Bool⋅e⋅an al⋅gebra

  [boo-lee-uhn]
Use boolean in a Sentence
–noun
1. Logic. a deductive logical system, usually applied to classes, in which, under the operations of intersection and symmetric difference, classes are treated as algebraic quantities.
2. Mathematics. a ring with a multiplicative identity in which every element is an idempotent.
Origin:
1885–90; named after G. Boole; see -an
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Bool·e·an   (bōō'lē-ən)   
adj.  

  1. Of or relating to a logical combinatorial system treating variables, such as propositions and computer logic elements, through the operators AND, OR, NOT, and XOR: a browser that supports Boolean searches.

  2. Of or relating to a data type or variable in a programming language that can have one of two values, true or false.


[After George Boole.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Science Dictionary
Boolean algebra   (b'lē-ən)  Pronunciation Key 
A form of symbolic logic, in which variables, which stand for propositions, have only the values "true" (or "1") and "false" (or "0"). Relationships between these values are expressed by the Boolean operators AND, OR, and NOT. For example, "a + b" means "a OR b", and its value is true as long as either a is true or b is true (or both). Boolean logic can be used to solve logical problems, and provides the mathematical tools fundamental to the design of digital computers. It is named after the mathematician George Boole. Also called Boolean logic. See also logic gate.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Computing Dictionary

Boolean mathematics, logic
1. Boolean algebra.
2. (bool) The type of an expression with two possible values, "true" and "false". Also, a variable of Boolean type or a function with Boolean arguments or result. The most common Boolean functions are AND, OR and NOT.
(1997-12-01)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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