series (Noun) — Similar things placed in order or happening one after another. ex. "they were investigating a series of bank robberies"
series (Noun) — A serialized set of programs. ex. "the Masterworks concert series" ex. "a comedy series"
series (Noun) — A periodical that appears at scheduled times.
series (Noun) — (sport) several contests played successively by the same teams. ex. "the visiting team swept the series"
series (Noun) — (electronics) connection of components in such a manner that current flows first through one and then through the other. ex. "the voltage divider consisted of a series of fixed resistors"
series (Noun) — A group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection. ex. "the Post Office issued a series commemorating famous American entertainers" ex. "his coin collection included the complete series of Indian-head pennies"
series (Noun) — (mathematics) the sum of a finite or infinite sequence of expressions.