Citron (s&ibreve_;trŭn), n. [F. citron, LL. citro, fr. L. citrus citron tree (cf. citreum, sc. malum, a citron), from Gr. kitron citron] 1. (Bot) A fruit resembling a lemon, but larger, and pleasantly aromatic; it is produced by the citron tree (Citrus medica). The thick rind, when candied, is the citron of commerce. The fruit was once called the lime.
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2. A citron tree, Citrus medica.
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3. A citron melon.
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Citron melon. (a) A small variety of muskmelon with sugary greenish flesh. (b) A small variety of watermelon, whose solid white flesh is used in making sweetmeats and preserves. -- Citron tree (Bot.), the tree which bears citrons. It was probably a native of northern India, and is now understood to be the typical form of Citrus Medica.
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