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Origin: L, a little frog, a medicinal plant, perhaps crowfoot, dim. Of rana a frog; cf. Raccare to roar.

(Science: botany) A genus of herbs, mostly with yellow flowers, including crowfoot, buttercups, and the cultivated ranunculi (R. Asiaticus, R. Aconitifolius, etc) in which the flowers are double and of various colours.