Of or pertaining to or consisting in ideas.Existing only in idea; confined to thought or imagination.Conforming completely to a standard of perfection; perfect.In philosophy, regarding ideas as the only real entities; pertaining to or of the nature of idealism.Arising from ideas or conceptions; based upon an ideal or ideals; manifesting or embodying imagination; imaginative: as, the ideal school in art or literature; an ideal statue or portrait.Synonyms Imaginary, fanciful, shadowy, unreal, chimerical.n. That which exists only in idea; a conception that exceeds reality.n. An imaginary object or individual in which an idea is conceived to be completely realized; hence, a standard or model of perfection: as, the ideal of beauty, virtue, etc.; Bayard, the ideal of chivalry.n. A standard of desire; an ultimate object or aim; a mental conception of what is most desirable: as, one's ideal of enjoyment; our ideals are seldom attained.n. Synonyms Pattern, Model, etc. See example.In projective geometry, infinitely distant.n. In mathematics, an ideal number.