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complex number
Word Origin
noun
1.
a mathematical expression (
a
+
bi
) in which
a
and
b
are real numbers and
i
^{2}
= −1.
Origin of
complex number
Expand
1825-1835
First recorded in
1825-35
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
British Dictionary definitions for
complex number
Expand
complex number
noun
1.
any number of the form
a
+ i
b
, where
a
and
b
are real numbers and i = √–1
See
number
(sense 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
complex number
in Science
Expand
complex number
(kŏm'plěks')
A number that can be expressed in terms of
i
(the square root of -1). Mathematically, such a number can be written
a
+
bi,
where
a
and
b
are real numbers. An example is 4 + 5
i.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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Difficulty index for
complex number
Few English speakers likely know this word
Word Value for
complex
20
24
Scrabble
Words With Friends
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