beau ideal

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The concept of perfect beauty.
• noun An idealized type or model.

from The Century Dictionary.

• noun A mental conception or image of any object, moral or physical, in its perfect typical form, free from all the deformities, defects, and blemishes accompanying its actual existence; a model of excellence in the mind or fancy; ideal excellence.

from the GNU version of the Collaborative International Dictionary of English.

• A conception or image of consummate beauty, moral or physical, formed in the mind, free from all the deformities, defects, and blemishes seen in actual existence; an ideal or faultless standard or model.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Nonstandard spelling of beau idéal.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an ideal instance; a perfect embodiment of a concept