Multiplicity is a word that is used to describe a large number or variety of things. There are not as many multiplicity quotes online as there are quotes for Mothers Day but there are still enough to give you inspiration or help you understand the full meaning of this word. If you have a multiplicity of options then this means that you have many different choices and a wide range of things to choose from. Multiplicity is also the title of a movie produced in 1996 that included the celebrities Michael Keaton and Andie MacDowell, and the topic of this comedy was cloning. If you have multiple personalities, a psychiatric disorder that is rare, then you have a multiplicity of selves.