noun, often attributive
se·​ries | \ ˈsir-(ˌ)ēz How to pronounce series (audio) \
plural series

Definition of series

1a : a number of things or events of the same class coming one after another in spatial or temporal succession a concert series the hall opened into a series of small rooms
b : a set of regularly presented television programs each of which is complete in itself
2 : the indicated sum of a usually infinite sequence of numbers
3a : the coins or currency of a particular country and period
b : a group of postage stamps in different denominations
4 : a succession of volumes or issues published with related subjects or authors, similar format and price, or continuous numbering
5 : a division of rock formations that is smaller than a system and comprises rocks deposited during an epoch
6 : a group of chemical compounds related in composition and structure
7 : an arrangement of the parts of or elements in an electric circuit whereby the whole current passes through each part or element without branching — compare parallel
8 : a set of vowels connected by ablaut (such as i, a, u in ring, rang, rung)
9 : a number of games (as of baseball) played usually on consecutive days between two teams in town for a 3-game series
10 : a group of successive coordinate sentence elements joined together
12 : three consecutive games in bowling
in series
: in a serial or series arrangement

Examples of series in a Sentence

a five-part series on the history of baseball a series of articles on global warming The Yankees played a three-game series against the Red Sox last week. The play-off series between the two teams begins next week.
Recent Examples on the Web If the season ended today, the Padres would be assigned a best-of-three playoff series played in Atlanta. Lance Pugmire, USA TODAY, 3 Aug. 2022 Neil Patrick Harris and David Burtka enjoy the sunset at a weekend screening of Harris' new Netflix series Uncoupled in The Hamptons, New York. People Staff, Peoplemag, 3 Aug. 2022 The Red Sox registered back-to-back wins against the Houston Astros after Tuesday’s victory, marking the Sox’ first series win since June 24-26 against the Guardians. Julian Mcwilliams,, 3 Aug. 2022 In May a beloved member of the community surrounding the PAX series of annual game conventions, Dawn ‘Deestar’ Wood, died after contracting covid at PAX East. Nathan Grayson, Washington Post, 3 Aug. 2022 Other revenue—which includes live events, commercial printing and television series—increased 18% to $54.7 million. Alexandra Bruell, WSJ, 3 Aug. 2022 Moving into the Cinesite orbit follows the UK parent acquiring L’Atelier Animation, a Montreal studio specializing in feature-length 3D animation and series. Etan Vlessing, The Hollywood Reporter, 2 Aug. 2022 Joining the new series is Taofeek Abijako, Fernando Casablancas, Ben Hard, Claude Shwartz, Ebon Trower and Sophia Wilson. Carson Burton, Variety, 2 Aug. 2022 For Olivia Rodrigo‘s High School Musical: The Musical: The series character, this could be the start of something new. Rania Aniftos, Billboard, 2 Aug. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'series.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of series

1611, in the meaning defined at sense 1a

History and Etymology for series

Latin, from serere to join, link together; akin to Greek eirein to string together, hormos chain, necklace, and perhaps to Latin sort-, sors lot

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Dictionary Entries Near series



series dynamo

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Statistics for series

Last Updated

5 Aug 2022

Cite this Entry

“Series.” Dictionary, Merriam-Webster, Accessed 12 Aug. 2022.

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More Definitions for series


se·​ries | \ ˈsir-ēz How to pronounce series (audio) \
plural series

Kids Definition of series

: a number of things or events arranged in order and connected by being alike in some way the third book in the series On either side of the rut were a series of ledges.— Louis Sachar, Holes


se·​ries | \ ˈsi(ə)r-(ˌ)ēz How to pronounce series (audio) \
plural series

Medical Definition of series

1 : a number of things or events of the same class coming one after another in spatial or temporal succession described a new series of cases
2 : a group of specimens or types progressively differing from each other in some morphological or physiological attribute a series of antitoxins
3 : a group of chemical compounds related in composition and structure


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