What is the meaning of Multiplicity?

The state of being made of multiple diverse elements.

The number of values for which a given condition holds.

A large indeterminate number.

The number of instances that can occur on a given end of a relationship, including 0..1, 1, 0..* or *, and 1..*.

The number of microstates associated with a given macrostate.

The condition of a single body/person displaying multiple distinct personas.

Source: wiktionary.org