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eighth

From Wiktionary, the free dictionary

English

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English numbers (edit)
80
 ←  7 8 9  → 
    Cardinal: eight
    Ordinal: eighth
    Abbreviated ordinal: 8th
    Latinate ordinal: octonary
    Adverbial: eight times
    Multiplier: eightfold
    Latinate multiplier: octuple
    Distributive: octuply
    Germanic collective: eightsome
    Collective of n parts: octuplet
    Greek or Latinate collective: octad
    Greek collective prefix: octo-, octa-
    Latinate collective prefix: octo-
    Fractional: eighth
    Elemental: octuplet
    Greek prefix: ogdo-
    Number of musicians: octet
    Number of years: octennium

Alternative forms

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Etymology

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Etymology tree
Proto-Indo-European *oḱtṓw
Proto-Indo-European *oḱtowós
Proto-Germanic *ahtudô
Proto-West Germanic *ahtudō
Old English eahtoþa
Middle English eightethe
English eighth

    Inherited from Middle English eightethe, from Old English eahtoþa, from Proto-Germanic *ahtudô; equivalent to eight +‎ -th (ordinal suffix).

    Pronunciation

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    Adjective

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    eighth (not comparable)

    1. The ordinal form of the number eight.
      • 2022, “2023 Laws of Chess”, in FIDE‎[1], page 21:
        Consequently, in the initial position the white pieces and pawns are placed on the first and second ranks; the black pieces and pawns on the eighth and seventh ranks.
      • 2025 February 25, “South Korea’s birth rate rose for the first time in 9 years. Is the world’s lowest fertility rate on the rebound?”, in CNN‎[2], sourced from Reuters, archived from the original on 6 July 2025:
        In 2023, the birthrate fell for the eighth consecutive year to 0.72, the lowest in the world, from 1.24 in 2015, raising concerns over the economic shock to society from such a rapid pace.

    Synonyms

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    Derived terms

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    Translations

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    Noun

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    eighth (plural eighths)

    1. The person or thing in the eighth position.
    2. One of eight equal parts of a whole.
      Two bits equals two eighths of a dollar.
      • 2000 October 3, Eric Nagourney, “VITAL SIGNS: PROTECTION; A Measure of an Infant Skull's Strength”, in The New York Times‎[3], archived from the original on 19 April 2022:
        Scientists from the University of Pennsylvania have determined that the young skull is only an eighth as strong as an adult one.
    3. (slang) An eighth of an ounce, or approximately 3.5 grams, of marijuana or other drugs.
    4. An interval by doubling in pitch frequency.

    Synonyms

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    • (person or thing in the eighth position): eighth one
    • (One of eight equal parts): ⅛, half-quarter, henry (for an eighth of an ounce of marijuana in the UK)
    • (⅛ oz.): ochava (historical Spanish contexts)
    • (twice the frequency): octave

    Coordinate terms

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    • (One of eight equal parts): epogdoon (a number greater by a ratio of nine to eight; 1+1⁄8)

    Translations

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    Verb

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    eighth (third-person singular simple present eighths, present participle eighthing, simple past and past participle eighthed)

    1. (transitive) To divide by eight.
      • 2013, Raindance Producers' Lab Lo-To-No Budget Filmmaking‎[4], page 31:
        The first step is to eighth the script out. See figure 3.6 overleaf. Eighthing a script is subjective.

    Translations

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    See also

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    Anagrams

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