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Definition of "imaginary" []

  • Having existence only in the imagination; unreal. (adjective)
  • Mathematics Of or being the coefficient of the imaginary unit in a complex number. (adjective)
  • Mathematics Of, involving, or being an imaginary number. (adjective)
  • Mathematics Involving only a complex number of which the real part is zero. (adjective)
  • Mathematics An imaginary number. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "imaginary" in a sentence
  • "Because Larry’s Fundy brain is so locked by his literalism he simply thinks “imaginary numbers” are *actually imaginary* ,that is to say not real, they do not exist."
  • "In fact, psychologists use the term "imaginary audience" to describe this heightened state of vigilance that is especially strong during adolescence."
  • "But on the other hand, as this warmth is felt differently by different temperaments, so what we call imaginary things affect different minds."