One of the mysteries of the English language finally explained.
A frog of the large family Ranidae, which comprises typical frogs with long hind legs that are used for both leaping and swimming.
Of, relating to, or designating a frog of the family Ranidae.
Late 19th century; earliest use found in Proceedings of the Zoological Society of London. From scientific Latin Rana, genus name (Linnaeus Systema Naturae (ed. 10, 1758) I. 210; from classical Latin rāna frog, perhaps of imitative origin) + -id, after scientific Latin Ranidae, family name.
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