Eighty (noun) Definition, Meaning & Examples

noun, plural eight·ies.
  1. a cardinal number, ten times eight.
  2. a symbol for this number, as 80 or LXXX.
  3. a set of this many persons or things.
  4. the numbers, years, degrees, or the like, from 80 through 89, as in referring to numbered streets, indicating the years of a lifetime or of a century, or degrees of temperature.
adjective
  1. amounting to 80 in number.
noun plural -ies
  1. the cardinal number that is the product of ten and eight
  2. a numeral, 80, LXXX, etc, representing this number
  3. the numbers 80–89, esp a person's age or the year of a particular century
  4. the amount or quantity that is eight times as big as ten
  5. something represented by, representing, or consisting of 80 units
determiner
    • amounting to eighty
    • (as pronoun)
Eighty (noun) Definition, Meaning & Examples

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