Quiz: Remember the definition of mal de mer?
1640s, "involving many parts," from French multiple (14c.), from Late Latin multiplus "manifold," from Latin multi- "many, much" (see multi-) + -plus "-fold," (see -fold). The noun is from 1680s, in mathematics, from the adjective. Multiple choice as a type of question attested from 1828. Multiple exposure first recorded 1923.