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Mathematics Increased by the addition of: Two plus two is four.
(conjunction)
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Added to; along with: Their strength plus their spirit makes them formidable. Intelligence plus wit makes for an interesting person.
(conjunction)
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Usage Problem And: "[He] is a committed man, plus he has imagination, vitality and national stature” ( Merv Griffin).
(conjunction)
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Positive or on the positive part of a scale: a plus value; a temperature of plus five degrees.
(adjective)
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Added or extra: a plus benefit.
(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.