Definition of "twodimensional" []

• Alternative spelling of two-dimensional. (adjective)

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• "Entirely new phenomena appear when the Hall effect is studied in twodimensional electron systems, in which the electrons are forced to move in an extremely thin surface layer between for example a metal and a semiconductor."
• "This work led eventually to twodimensional crystals of pol II, and then to large single crystals and the X-ray structure of pol II."
• "Go up a dimension, and any three points can be located on a twodimensional plane."