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quintine

From The Collaborative International Dictionary of English v.0.48:

Quintine \Quin"tine\, n. [L. quintus the fifth: cf. F.
   quintine.] (Bot.)
   The embryonic sac of an ovule, sometimes regarded as an
   innermost fifth integument. Cf. Quartine, and Tercine.
   [1913 Webster]

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