Phrase guide

imaginary part

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

Of a complex number a + bi, where a and b are real numbers, the value b.

Definition source: English Wiktionary via Wiktextract

Topics: complex-analysis, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

the part of a complex number that has the square root of -1 as a factor

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: imaginary part of a complex number

Antonyms: none provided

Broader terms: pure imaginary number

History

Etymology

No etymology was provided for this word.

Across languages

Translations

10 source translations are retained for this English entry.

  • Chinese Mandarin: 虛部 /虚部 (xūbù) — of a complex number
  • Danish: imaginær del — of a complex number
  • Finnish: imaginaariosa — of a complex number
  • French: partie imaginaire — of a complex number
  • German: Imaginärteil — of a complex number
  • Hungarian: képzetes rész — of a complex number
  • Japanese: 虚部 (kyobu) — of a complex number
  • Japanese: 虚数部 (kyosūbu) — of a complex number
  • Russian: мни́мая часть (mnímaja častʹ) — of a complex number
  • Swedish: imaginärdel — of a complex number