similar things placed in order or happening one after another

a serialized set of programs

a periodical that appears at scheduled times

(sports) several contests played successively by the same teams

(electronics) connection of components in such a manner that current flows first through one and then through the other

a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection

(mathematics) the sum of a finite or infinite sequence of expressions