imaginary
adjective15th century{ds||1|a|}
- existing only in imagination : lacking factual reality
- formed or characterized imaginatively or arbitrarily
- containing or relating to the imaginary unit
imaginary number
noun
imaginary number
\
1798
- a complex number (such as 2 + 3i) in which the coefficient of the imaginary unit is not zero —called also imaginary
imaginary part
noun
imaginary part
\
1747
- the part of a complex number (such as 3i in 2 + 3i) that has the imaginary unit as a factor
imaginary unit
noun
imaginary unit
\
circa 1911
- the positive square root of minus 1 denoted by i or + √-1
pure imaginary
noun
pure imaginary
\
1947
- a complex number that is solely the product of a real number other than zero and the imaginary unit
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