1. a number of things that follow on one after the other or are connected one after the other
Synonyms: chain, line, sequence, stream, succession; see also Thesaurus:sequence
A series of seemingly inconsequential events led cumulatively to the fall of the company.
2. (broadcasting) a television or radio program which consists of several episodes that are broadcast in regular intervals
Synonyms: show, program
“Friends” was one of the most successful television series in recent years.