名詞 imaginary:

1. (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
   同義詞：complex number, complex quantity, imaginary number

形容詞 imaginary:

1. not based on fact; dubious
   同義詞：fanciful, imagined, notional

1. An ideal or imaginary land.
   理想或想象的世界
2. People still have a general fear for the imaginary infernal powers.
   人們對于虛構(gòu)的地獄中的鬼神仍具有一種普遍的恐懼。
3. Imaginary; unreal; fanciful.
   空想的想象的; 不真實的; 愛空想的
4. All the characters in this book are imaginary.
   這本書中的人物都是虛構(gòu)的。

i.mag.i.nar.y

adj.（形容詞）
Having existence only in the imagination; unreal.
想象中的，虛幻的：只在想象中存在的；不真實的
Mathematics
【數(shù)學】
Of, relating to, or being the coefficient of the imaginary unit in a complex number.
虛部系數(shù)的：一個復數(shù)中虛部系數(shù)的，與之有關(guān)的，或是虛部系數(shù)的
Of, relating to, involving, or being an imaginary number.
虛數(shù)的：虛數(shù)的，與虛數(shù)有關(guān)的，包括虛數(shù)的
Involving only a complex number of which the real part is zero.
包含一個實部為零的復數(shù)的
n.（名詞）
【復數(shù)】 i.mag.i.nar.ies 【數(shù)學】
An imaginary number.
虛數(shù)

【引伸】
imag.inar.ily
adv.（副詞）
imag.inar.iness
n.（名詞）