A conception of something in its absolute perfection. One that is regarded as a standard or model of perfection or excellence. An ultimate object of endeavor; a goal. An honorable or worthy principle or aim. Of, relating to, or embodying an ideal. Conforming to an ultimate form or standard of perfection or excellence. Considered the best of its kind. Completely or highly satisfactory: The location of the new house is ideal. Existing only in the mind; imaginary. Lacking practicality or the possibility of realization. Of, relating to, or consisting of ideas or mental images. Philosophy Existing as an archetype or pattern, especially as a Platonic idea or perception. Philosophy Of or relating to idealism.