noun ro·gnon \(ˈ)rōn¦yōⁿ, (ˈ)rȯn-\

Definition of rognon



  1. :  a small rounded mass of rock usually embedded in rock of a different type

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Origin and Etymology of rognon

French, literally, kidney, from (assumed) Vulgar Latin renion-, renio, from Latin renes (plural) kidneys

First Known Use: 1853

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