un complementary

complementary

[kom-pluh-men-tuh-ree, -tree]
adjective
1.
forming a complement; completing.
2.
complementing each other.
noun, plural complementaries.
3.

Origin:
1590–1600; complement + -ary

complementariness, noun
uncomplementary, adjective
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World English Dictionary
complementary or complemental (ˌkɒmplɪˈmɛntərɪ, -trɪ)
 
adj
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
 
complemental or complemental
 
adj
 
comple'mentarily or complemental
 
adv
 
comple'mentally or complemental
 
adv
 
comple'mentariness or complemental
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

complementary
1829, from complement. Earliest attested use is in complementary colors.
Online Etymology Dictionary, © 2010 Douglas Harper
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