adj.
- having or involving several parts or elements.
- numerous.
- (of a disease or injury) complex in its nature or effect; affecting several parts of the body.
n.
- a number that may be divided by another a certain number of times without a remainder.
- Brit. a shop with branches in many places.
Etymology
C17: from Fr., from late L. multiplus, alt. of L. multiplex (see multiplex).