n.
1.similar things placed in order or happening one after another
2.a serialized set of programs
3.a periodical that appears at scheduled times
4.(sports) several contests played successively by the same teams
5.a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection
6.(mathematics) the sum of a finite or infinite sequence of expressions
7.(electronics) connection of components in such a manner that current flows first through one and then through the other
