imaginary, fanciful, visionary, fantastic, chimerical, quixotic mean unreal or unbelievable. imaginary applies to something which is fictitious and purely the product of one's imagination.

IMAGINARY definition: 1. Something that is imaginary is created by and exists only in the mind: 2. Something that is…. Learn more.

IMAGINARY definition: existing only in the imagination or fancy; not real; fancied. See examples of imaginary used in a sentence.

2 meanings: 1. existing in the imagination; unreal; illusory 2. mathematics involving or containing imaginary numbers. The....

imaginary (ɪˈmædʒɪnərɪ; -dʒɪnrɪ) adj 1. existing in the imagination; unreal; illusory

Definition of imaginary adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

There are ten meanings listed in OED's entry for the word imaginary, four of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Some common synonyms of imaginary are chimerical, fanciful, fantastic, quixotic, and visionary. While all these words mean "unreal or unbelievable," imaginary applies to something which is fictitious and …

(Definition of imaginary from the Cambridge Learner's Dictionary © Cambridge University Press)

An imaginary number is the product of a real number and the imaginary unit i, [note 1] which is defined by its property i2 = −1. [1][2] The square of an imaginary number bi is −b2. For example, 5i is an …