imaginary
(noun, adjective)
adjective
1. not based on fact; existing only in the imagination
- a small child's imaginary friends
Similar word(s): unreal, fanciful, notional
Sentences with imaginary as an adjective:
- She isn't real, she's imaginary.
noun
1. (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
Definition categories: quantity, number