irrotational
Ir`ro*ta"tion*al, a. (Physics) Defn: Not rotatory; passing from one point to another by a movement other than rotation; -- said of the movement of parts of a liquid or yielding mass. Sir W. Thomson.
Ir`ro*ta"tion*al, a. (Physics) Defn: Not rotatory; passing from one point to another by a movement other than rotation; -- said of the movement of parts of a liquid or yielding mass. Sir W. Thomson.