Resupination is derived from the Latin word resupinus, meaning "bent back with the face upward" or "on the back".[1] "Resupination" is the noun form of the adjective "resupine" which means "being upside-down, supine or facing upward".[2]
The word "resupinate" is generally only used in a botanical context – in everyday language, "supine" has a similar meaning.[3][4] In botany, resupination refers to the "twisting" of flowers or leaves through about 180° as they open. Resupinate leaves have the petiole or "stalk" twisted - resupinate flowers twist as they open.[5]