• synonyms

Z, z

[zee or, esp. British, zed; Archaic iz-erd]
noun, plural Z's or Zs, z's or zs.
  1. the 26th letter of the English alphabet, a consonant.
  2. any spoken sound represented by the letter Z or z, as in zero, zigzag, or buzzer.
  3. something having the shape of a Z.
  4. a written or printed representation of the letter Z or z.
  5. a device, as a printer's type, for reproducing the letter Z or z.
Show More


  1. zeptosecond.
Show More
Also called zs


or Z's

noun (used with a plural verb) Slang.
  1. sleep (often used with grab, catch, etc.): to grab some z's before dinner.
Show More

Origin of z's

First recorded in 1960–65; from the conventional use of a series of z's to represent snoring


[zep-tuh-sek-uh nd]
  1. one sextillionth (10-21) of a second. Abbreviation: zsec, zs
Show More
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for zs

Historical Examples of zs

  • They think if they talk like they had an egg in there mouth an put in lots of zs its French.

    "Same old Bill, eh Mable!"

    Edward Streeter

  • In the other case (zs) the next note is a Third lower: but it does not seem to belong to the circumflexed syllable.

  • Curves showing the relation of 1/ρ and ZS or μ and B, are called “permeability curves.”

  • Zs seem to kinder go with the astrology business, somehow—I dont know why.

    Short Sixes

    H. C. Bunner