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