Synonyms for imaginary at Thesaurus.com with free online thesaurus, antonyms, and definitions. No, but it is irrational, because there is no rational number whose square is two. Imaginary and imaginative are two English adjectives that are similar enough that some writers get them confused.They both stem from the root word imagine, which is a verb that means to envision things that may not be the case.They mean different things though, and the careful writer will know the correct situations in which to use each of these words. Similarly, creativity scholar Michele Root-Bernstein discusses her daughter's invention of an imaginary world, one that lasted for over a decade, in the 2014 book, Inventing Imaginary Worlds: From Childhood Play to Adult Creativity. Although there is no real number with this property, i can be used to extend the real numbers to what are called complex numbers, using addition and multiplication. The imaginary unit or unit imaginary number (i) is a solution to the quadratic equation x 2 + 1 = 0. Imaginary numbers are the square roots of negative numbers. Find descriptive alternatives for imaginary. Imaginary definition: An imaginary person, place, or thing exists only in your mind or in a story , and not in... | Meaning, pronunciation, translations and examples (mathematics: number whose square is negative or zero) ( MathÃ©matiques ) nombre imaginaire pur nm nom masculin : s'utilise avec les articles "le", "l'" (devant une voyelle ou un h muet), "un" . There is no registration. ), from Latin imaginari "to form a mental picture, picture to oneself, imagine" (also, in Late Latin imaginare "to form an image of, represent"), from imago "an image, a likeness," from stem of imitari "to copy, imitate" (from PIE root *aim-"to copy"). 2500 pages of free content are available only online. A simple example of the use of i in a complex number is 2 + 3i. imagine (v.) mid-14c., "to form a mental image of," from Old French imaginer "sculpt, carve, paint; decorate, embellish" (13c. imaginary number n noun: Refers to person, place, thing, quality, etc. Paracosms are also mentioned in articles about types of childhood creativity and problem-solving. All numbers are imaginary (even "zero" was contentious once). The home page shows interactive worksheets, word games, word puzzles and themed content with Latin word roots and align with Common Core Standards.