[f. L. quint-us fifth.]

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  1.  Bot. Mirbel’s name for a supposed fifth integument of an ovule (cf. QUARTINE).

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1832.  Lindley, Introd. Bot., 159. It is apparently this quintine that Mr. Brown describes, in the ovulum of the Orchis tribe.

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  2.  Chem. (See quot.)

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1873.  Ralfe, Phys. Chem., p. xviii. Triads, Glycerin Series, Quintine or Valerylene C5 H8.

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