Physics, Chemistry. 1  a wave function describing the state of a single electron in an atom (atomic orbital) or in a molecule (molecular orbital) 2  the electron in that state.
DEFINITION of 'Yo-Yo'. Slang for a very volatile market. A yo-yo market will have no distinguishing features of either an up or down market, taking on characterstics of both. Security prices in a yo-yo market will swing very high to low over a given period of time, making it difficult for buy and hold investors to profit. Next Up.
Mario Mims, better known by his stage name Yo Gotti, is an American rapper. In 1996, Gotti released his debut album Youngsta's On a Come Up under the alias Lil Yo. He went to release From Da Dope Game 2 Da Rap Game, Self-Explanatory, Life, Back 2 da Basics, Live from the Kitchen, I Am and The Art of Hustle.