Definition of series in English:

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Pronunciation: /ˈsirēz/

noun (plural same)

1A number of things, events, or people of a similar kind or related nature coming one after another: the explosion was the latest in a series of accidents he gave a series of lectures on modern art
More example sentences
  • The event featured a series of panel discussions related to issues of media.
  • The leaders of various intelligence agencies worry about a series of high-profile events this summer.
  • You might have planned out a whole series of attacks, but one inopportune roll and your turn is over.
succession, sequence, string, chain, run, round;
spate, wave, rash;
set, course, cycle;
row, line
formal concatenation
1.1A set of books, maps, periodicals, or other documents published in a common format or under a common title.
Example sentences
  • Most recently she has published a series of small spell books that are really good.
  • He published a series of books on the Sami language, names and folklore.
  • She has published a series of books for adults and children and has won scores of honours.
1.2A set of games played between two teams, or among any number of individual competitors: a playoff series against Portland See also World Series.
More example sentences
  • Once a playoff series commences, each game played is subjected to even closer scrutiny.
  • Each of those teams has a starter who is capable of winning two games in a playoff series.
  • Somewhere that doesn't convince us that will help the team win a playoff series.
1.3A set of stamps, banknotes, or coins issued at a particular time or having a common design or theme.
Example sentences
  • Should a collector complete all the denominations in a coin series?
  • There could be a whole series of Peanuts stamps and there probably will be.
  • The first coin in the series was Delaware, which chooses an image of a man riding a horse.
1.4A line of products, especially vehicles or machines, sharing features of design or assembly and marketed with a separate number from other lines: [as modifier]: a series III SWB Land Rover
More example sentences
  • They are not going to look favorably on the idea that the A300 series may have a design flaw.
  • Many users say that HP's decision to discontinue the e3000 series line is premature.
  • Siemens 45 series phones are less affected and can be resuscitated after about two minutes of work.
2A set of related television or radio programs, especially of a specified kind: a new drama series
More example sentences
  • It reminds me of an episode from a criminally underrated television series, News Radio.
  • A radio drama series written, set and recorded in Nigeria has won two prestigious awards.
  • His progress will form the basis of a television series to be broadcast in the US next spring.
serial, program, show, drama;
soap opera
informal soap, sitcom, miniseries
3 [as modifier] Denoting electrical circuits or components arranged so that the current passes through each successively. The opposite of parallel.
Example sentences
  • In a series circuit with two or more bulbs, which bulb lights first when the circuit is closed?
  • A series resistor and parallel cap were not as effective as a series inductor and the cap.
4 Music another term for tone row.
Example sentences
  • The odd notes in the series represent a rising chromatic scale; the evens, a falling one.
5 Geology (In chronostratigraphy) a range of strata corresponding to an epoch in time, being a subdivision of a system and itself subdivided into stages: the Pliocene series
More example sentences
  • It seeks to achieve the precise definition of systems, series, and stages by the use of fossils within the Phanerozoic rocks.
  • These series are chemically defined subdivisions of the Arequita Formation.
  • A thinner series of these rocks occurs on top of horsts of Jurassic rocks.
6 Chemistry A set of elements with common properties or of compounds related in composition or structure: the metals of the lanthanide series Compare with period (sense 5 of the noun).
More example sentences
  • Good examples of a series of elements in the same family are the transition metals.
  • These differences are noticed in all of the other isomers within the series.
7 Mathematics A set of quantities constituting a progression or having the several values determined by a common relation.
Example sentences
  • The main research topics which Genocchi worked on were number theory, series and the integral calculus.
  • You'll have spotted a fundamental property of this ratio when you find the limiting value of the new series!
  • The puzzle here is that only one of these two puzzles involves the Fibonacci number series!
8 Phonetics A group of speech sounds having at least one phonetic feature in common but distinguished in other respects.


in series

(Of a set of batteries or electrical components) arranged so that the current passes through each successively.
Example sentences
  • If you hook two batteries in series to get 3 volts, what does that do to the strength of the magnet?
  • In the Tandem Cell there are two photo catalytic cells arranged in series.
  • In extensive plants, it is also possible to connect the circuit-breakers in series.


Early 17th century: from Latin, literally 'row, chain', from serere 'join, connect'.

  • This is an English use of a Latin word meaning literally ‘row, chain’.

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