English

A one-to-many mapping from X to Y.

Adjective

one-to-many ‎(not comparable)

1. (mathematics, of a function) Having the property that the same argument may yield multiple values, but different arguments never yield the same value.
2. (mathematics, logic, of a relationship between two sets) having the property that an element of one set may be assigned by the relationship to several elements in the other set, but that a given element in the second set can have only one member of the first set assigned to it.

   "Being a genetic mother of" is a one-to-many relation from the set of cats to the set of cats.

3. From a single source to multiple recipients.

   Traditional mass media, both print and broadcast, are forms of one-to-many communications.

Synonyms

• (mathematics, logic): one-many

Coordinate terms

• one-to-one, many-to-one, many-to-many