[a. F. beau idéal the ideal Beautiful, ‘the Beautiful’ as an abstract conception; beau being the sb., and idéal the adj. But in Eng., where the adj. usually precedes the sb., there has been a tendency to take ideal as the sb. part, whence the current usage; cf. IDEAL.]

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  † 1.  The ideal Beautiful; the Beautiful, or beauty, in its ideal perfection. Obs.

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1801.  Mar. Edgeworth, Belinda, xix. (D.). The image which they have in their own minds of the beau ideal is cast upon the first objects they afterwards behold.

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  2.  The highest conceived or conceivable type of beauty or excellence of any kind; that in which one’s ‘ideal’ is realized, the perfect type or model.

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1820.  W. Irving, Sketch-Bk., John Bull (D.). Wonderfully captivated with the beau idéal which they have formed of John Bull.

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1827.  Gent. Mag., XCVII. II. 516. The beau ideal of manly beauty.

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1854.  H. Miller, Sch. & Schm., xxii. 231. The Highlanders came to regard him as the very beau-idéal of a minister.

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