Definition of ideal

• a. - Existing in idea or thought; conceptional; intellectual; mental; as, ideal knowledge.
• a. - Reaching an imaginary standard of excellence; fit for a model; faultless; as, ideal beauty.
• a. - Existing in fancy or imagination only; visionary; unreal.
• a. - Teaching the doctrine of idealism; as, the ideal theory or philosophy.
• a. - Imaginary.
• n. - A mental conception regarded as a standard of perfection; a model of excellence, beauty, etc.