The World Series consists of a series of seven games between the champions of the National and American Baseball Leagues. A series is a group of similar things happening one after the other.

Your favorite TV drama that comes on week after week is a series. Each episode is one in a series of many. If you make one mistake after another as you try to make dinner, you could say that the meal arrived on the table despite a series of culinary mishaps. If you have several conversations with your parents about how late you can stay out, you might say your curfew was determined by a series of discussions.

Definitions of series
  1. noun
    similar things placed in order or happening one after another
    “they were investigating a series of bank robberies”
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    Stations, Stations of the Cross
    (Roman Catholic Church) a devotion consisting of fourteen prayers said before a series of fourteen pictures or carvings representing successive incidents during Jesus' passage from Pilate's house to his crucifixion at Calvary
    chain, concatenation
    a series of things depending on each other as if linked together
    a series of sentinels or of military posts enclosing or guarding some place or thing
    course, line, trajectory
    a connected series of events or actions or developments
    a series of poems or songs on the same theme
    electrochemical series, electromotive force series, electromotive series
    a serial arrangement of metallic elements or ions according to their electrode potentials determined under specified conditions; the order shows the tendency of one metal to reduce the ions of any other metal below it in the series
    a series of ordered groupings of people or things within a system
    a connected series or group
    patterned advance, progression
    a series with a definite pattern of advance
    blizzard, rash
    a series of unexpected and unpleasant occurrences
    serial arrangement in which things follow in logical order or a recurrent pattern
    string, train
    a sequentially ordered set of things or events or ideas in which each successive member is related to the preceding
    a group of people or things arranged or following in order
    wave train
    a succession of waves spaced at regular intervals
    helium group
    the series of inert gases
    actinide series
    (chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium
    lanthanide series
    the rare-earth elements with atomic numbers 57 through 71; having properties similar to lanthanum
    cistron, factor, gene
    (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity
    a linear sequence of symbols (characters or words or phrases)
    a sequence of numbers or letters that opens a combination lock
    a coordinated sequence of chess moves
    Fibonacci sequence
    a sequence of numbers in which each number equals the sum of the two preceding numbers
    a chain of connected ideas or passages or objects so arranged that each member is closely related to the preceding and following members (especially a series of patristic comments elucidating Christian dogma)
    daisy chain
    (figurative) a series of associated things or people or experiences
    celestial hierarchy
    the collective body of angels
    data hierarchy
    an arrangement of data consisting of sets and subsets such that every subset of a set is of lower rank than the set
    a classification of organisms into groups based on similarities of structure or origin etc
    a succession of stages or operations or processes or units
    an extended (often showy) succession of persons or things
    run, streak
    an unbroken series of events
    arithmetic progression
    (mathematics) a progression in which a constant is added to each term in order to obtain the next term
    geometric progression
    (mathematics) a progression in which each term is multiplied by a constant in order to obtain the next term
    harmonic progression
    (mathematics) a progression of terms whose reciprocals form an arithmetic progression
    current, flow, stream
    dominant course (suggestive of running water) of successive events or ideas
    a specific sequence of three adjacent nucleotides on a strand of DNA or RNA that specifies the genetic code information for synthesizing a particular amino acid
    type of:
    order, ordering, ordination
    logical or comprehensible arrangement of separate elements
  2. noun
    a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection
    “the Post Office issued a series commemorating famous American entertainers”
    “his coin collection included the complete series of Indian-head pennies”
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    type of:
    group, grouping
    any number of entities (members) considered as a unit
  3. noun
    (mathematics) the sum of a finite or infinite sequence of expressions
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    power series
    the sum of terms containing successively higher integral powers of a variable
    convergence, convergency
    the approach of an infinite series to a finite limit
    divergence, divergency
    an infinite series that has no limit
    geometric series
    a geometric progression written as a sum
    Fourier series
    the sum of a series of trigonometric expressions; used in the analysis of periodic functions
    exponential series
    a series derived from the expansion of an exponential expression
    type of:
    multinomial, polynomial
    a mathematical function that is the sum of a number of terms
  4. noun
    a periodical that appears at scheduled times
    synonyms: serial, serial publication
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    a periodical that is published twice each week (or 104 issues per year)
    a periodical that is published every week (or 52 issues per year)
    a periodical that is published twice each month (or 24 issues per year)
    a periodical that is published every month (or 12 issues per year)
    a periodical that is published every quarter (or four issues per year)
    a periodical that is published twice a month or every two months (either 24 or 6 issues per year)
    a periodical that is published twice a week or every two weeks (either 104 or 26 issues per year)
    type of:
    a publication that appears at fixed intervals
  5. noun
    a serialized set of programs
    “a comedy series
    “the Masterworks concert series
    synonyms: serial
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    soap opera
    a serialized program usually dealing with sentimentalized family matters that is broadcast on radio or television (frequently sponsored by a company advertising soap products)
    a series of four related works (plays or operas or novels)
    type of:
    broadcast, program, programme
    a radio or television show
  6. noun
    (sports) several contests played successively by the same teams
    “the visiting team swept the series
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    home stand
    a series of successive games played at a team's home field or court
    World Series
    series that constitutes the playoff for the baseball championship
    type of:
    competition, contest
    an occasion on which a winner is selected from among two or more contestants
  7. noun
    (electronics) connection of components in such a manner that current flows first through one and then through the other
    “the voltage divider consisted of a series of fixed resistors”
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    type of:
    connectedness, connection, connexion
    a relation between things or events (as in the case of one causing the other or sharing features with it)
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