imaginary

B1 CET-4 Oxf 3000 大学 FREQ #8187 ★☆☆☆☆

a. 想像的, 虚构的, 假想的

发音

UK /ɪˈmæd͡ʒɪnəɹi/
UK /ɪˈmæd͡ʒɪnɹi/
US /ɪˈmæd͡ʒɪˌn(ɛ)ɹi/

词形变化

imaginaries 复数 imaginaries more imaginary 比较级 most imaginary 最高级

教材释义与例句

形容词

虚构的，假想的；想像的；虚数的

释义与例句

n.
  1. 1.

    Imagination; fancy.

  2. 2.

    An imaginary number.

    可数 数学
  3. 3.

    The set of values, institutions, laws, and symbols common to a particular social group and the corresponding society through which people imagine their social whole.

adj. B1 Oxf 3000
  1. 1.

    Existing only in the imagination.

    幻想

    imaginary friend

    Unicorns are imaginary.

  2. 2.

    Having no real part; that part of a complex number which is a multiple of √ (called imaginary unit).

    数学
  3. 3.

    Having no real part; that part of a complex number which is a multiple of √ (called imaginary unit).

    数学

词汇关系

名词

同义词 2

complex number imaginary number

上位词 1

number

下位词 4

real complex conjugate pure imaginary number real number

部分词 1

imaginary part
形容词

同义词 2

fanciful notional

近义相关 1

unreal

相关短语

imaginary number [计] 虚数 imaginary part [计] 虚部 imaginary axis [计] 虚轴 imaginary numbers imaginary parts imaginary unit 虚数单位 imaginary units imaginary axes imaginary geometry imaginary lat syndrome imaginary museum imaginary museums imaginary friend imaginary friends

词源

From Middle English ymaginarie, ymagynary, from Latin imāginārius (“relating to images, fancied”), from imāgō, equivalent to imagine + -ary. The mathematical sense derives from René Descartes's use (of the French imaginaire) in 1637, La Geometrie, to ridicule the notion of regarding non-real roots of polynomials as numbers. Although Descartes' usage was derogatory, the designation stuck even after the concept gained acceptance in the 18th century.

来源：wiktionary