Definition from Wiktionary, the free dictionary
See also séries
series (plural series)
- A number of things that follow on one after the other or are connected one after the other.
- A series of seemingly inconsequential events led cumulatively to the fall of the company.
- (US, Canada) A television or radio program which consists of several episodes that are broadcast in regular intervals
- Friends was one of the most successful television series in recent years.
- (UK) A group of episodes of a television or radio program broadcast in regular intervals with a long break between each group, usually with one year between the beginning of each.
- The third series of Friends aired from 1996 to 1997.
- (mathematics) The sum of the terms of a sequence.
- The harmonic series has been much studied.
- (cricket, baseball) A group of matches between two sides, with the aim being to win more matches than the opposition.
- The Blue Jays are playing the Yankees in a four-game series.
- (biology) An unranked taxon.
Usage notes 
- In the United Kingdom, television and radio programs (spelt in Commonwealth English as "programmes") are divided into series, which are usually a year long. In North America, the word "series" is a synonym of "program", and programs are divided into year-long seasons.
- (mathematics): Beginning students often confuse series with sequence.
- (number of things that follow on one after the other): chain, line, sequence, stream, succession
- (television or radio program): show, program
Derived terms 
- (media, TV) TV series
- (mathematics): arithmetic series, basic hypergeometric series, confluent hypergeometric series, formal power series, geometric series, hypergeometric series, power series
Related terms 
a number of things that follow on one after the other
television or radio program
in analysis: sum of the terms of a sequence
series (not comparable)
- (electronics) Connected one after the other in a circuit.
- You have to connect the lights in series for them to work properly.
- series in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913
- series in The Century Dictionary, The Century Co., New York, 1911
- series at OneLook Dictionary Search
- Second-person singular conditional form of ser.
series f pl
- indefinite genitive singular of serie