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complementary

[kom-pluh-men-tuh-ree, -tree] /ˌkɒm pləˈmɛn tə ri, -tri/
adjective
1.
forming a complement; completing.
2.
complementing each other.
noun, plural complementaries.
3.
Origin
1590-1600
1590-1600; complement + -ary
Related forms
complementariness, noun
uncomplementary, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for complement aries

complementary

/ˌkɒmplɪˈmɛntərɪ; -trɪ/
adjective
1.
acting as or forming a complement; completing
2.
forming a satisfactory or balanced whole
3.
forming a mathematical complement: sine and cosine are complementary functions
4.
(maths, logic) (of a pair of sets, etc) mutually exclusive and exhaustive, each being the complement of the other
5.
(of genes) producing an effect in association with other genes
6.
involving or using the treatments and techniques of complementary medicine
Derived Forms
complementarily, complementally, adverb
complementariness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for complement aries

complementary

adj.

1620s, "ceremonious," from complement + -ary. Sense "forming a complement" attested from 1829, earliest in complementary colors.

Online Etymology Dictionary, © 2010 Douglas Harper
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