mathematics A number of the form a+bi where a and b are real numbers and i is the square root of -1.
synoniemen: complex quantity, imaginary, imaginary number.
Roget 84:
number,
symbol,
numeral,
figure,
cipher,
digit,
integer;
counter;
round number;
formula;
function;
series.
sum,
difference,
complement,
subtrahend;
product;
multiplicand,
multiplier,
multiplicator†;
coefficient,
multiple;
dividend,
divisor,
factor,
quotient,
submultiple [Math.];
fraction,
rational number;
surd,
irrational number;
transcendental number;
mixed number,
complex number,
complex conjugate;
numerator,
denominator;
decimal,
circulating decimal,
repetend;
common measure,
aliquot part;
prime number,
prime,
relative prime,
prime factor,
prime pair;
reciprocal;
totient†.
binary number,
octal number,
hexadecimal number [Comp.].
permutation,
combination,
variation;
election.
ratio,
proportion,
comparison
etc.
464;
progression;
arithmetical progression,
geometrical progression,
harmonical progression†;
percentage,
permilage.
figurate numbers†,
pyramidal numbers,
polygonal numbers.
power,
root,
exponent,
index,
logarithm,
antilogarithm;
modulus,
base.
differential,
integral,
fluxion†,
fluent.
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Nederlands: imaginair getal, complex getal