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series Line breaks: ser¦ies
Pronunciation: /ˈsɪəriːz/

Definition of series in English:

noun (plural same)

1A number of events, objects, or people of a similar or related kind 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.
1.1A set of books, periodicals, or other documents published in a common format or under a common title: the first four books in the Toybox Science series a series of travel books
More 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: the Test series against Australia
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: a series of five stamps issued today to mark the 14th World Orchid Conference
More 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.
2A set or sequence of related television or radio programmes: 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.
set of programmes, programme, production, serial;
informal sitcom, soap
3 Music another term for tone row.
Example sentences
  • The odd notes in the series represent a rising chromatic scale; the evens, a falling one.
4 [as modifier] Denoting electrical circuits or components arranged so that the current passes through each successively: a series circuit the series connection of the two coils The opposite of parallel.
More 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.
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
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: the voiced plosive series [b], [d], [g]


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’.


in series

(Of a set of batteries or electrical components) arranged so that the current passes through each successively: the four field coils are connected in series a current-sensing relay which is in series with the heater element
More 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.

Words that rhyme with series

miniseries • Furies

Definition of series in:

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Word of the day fortissimo
Pronunciation: fôrˈtisəˌmō
(especially as a direction) very loud or loudly