| ripen | 1. To grow ripe; to become mature, as grain, fruit, flowers, and the like; as, grapes ripen in the sun. 2. To approach or come to perfection. Origin: Ripened; Ripening. Source: Websters Dictionary (01 Mar 1998) |
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| ripening | Denoting progressive oxidation of dye solutions, as in the ripening of haematoxylin solutions to haematein or of methylene blue to azure dyes. (05 Mar 2000) |