ARIL

aril. Aril, n. the outer coat of a seed

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Ar″il (�), ‖A‐ril″lus (�), n. [[From LL. arilli dry grapes, perh. fr. L. aridus dry: cf. F,. arille.]] (Bot.) A exterior covering, forming a false coat or appendage to a seed, as the loose, transparent bag inclosing the seed of the white water lily. The mace of the nutmeg is also an aril. Gray.