imaginary
- n (mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1
- s not based on fact; unreal
a small child's imaginary friends
illuminating
- v make lighter or brighter
- v make free from confusion or ambiguity; make clear
- v add embellishments and paintings to (medieval manuscripts)
- a tending to increase knowledge or dissipate ignorance
an illuminating lecture