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Z, z

[zee or, esp. British, zed; Archaic iz-erd] /zi or, esp. British, zɛd; Archaic ˈɪz ərd/
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.

z

1.
zone.

z

Symbol, Mathematics.
1.
an unknown quantity or variable.
2.
(in Cartesian coordinates) the z- axis.

Z

1.
Astronomy. zenith distance.
2.
zone.

Z

Symbol.
1.
the 26th in order or in a series, or, when I is omitted, the 25th.
2.
(sometimes lowercase) the medieval Roman numeral for 2000.
Compare Roman numerals.
3.
Chemistry, Physics. atomic number.
4.
Electricity. impedance.

Z0

1.
Symbol, Physics. Z-zero particle.

z.

1.
zero.

z's

or Z's

[zeez] /ziz/
noun, (used with a plural verb) Slang.
1.
sleep (often used with grab, catch, etc.):
to grab some z's before dinner.
Origin of z's
1960-1965
First recorded in 1960-65; from the conventional use of a series of z's to represent snoring

zeta

[zey-tuh, zee-] /ˈzeɪ tə, ˈzi-/
noun
1.
the sixth letter of the Greek alphabet (Z, ζ).
2.
the consonant sound represented by this letter.
Origin
First recorded in 1820-30, zeta is from the Greek word zêta
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for z
Contemporary Examples
Historical Examples
  • Its planks were oak; great nails in them marked the z of its brace.

  • "Two" often appears as z in the early printed books, 12 appearing as iz.

    The Hindu-Arabic Numerals David Eugene Smith
  • He was amazed to learn that she had walked all the way from z——, and quite alone, too.

  • And we have witnesses that Kettle-Belly was in some kind of deal with the z'Srauff, too.

    Lone Star Planet Henry Beam Piper and John Joseph McGuire
  • Yes, plus anybody whom the z'Srauff Ambassador might have told.

    Lone Star Planet Henry Beam Piper and John Joseph McGuire
British Dictionary definitions for z

z

symbol
1.
the z-axis or a coordinate measured along the z-axis in a Cartesian or cylindrical coordinate system
2.
an algebraic variable

z

/zɛd; US ziː/
noun (pl) z's, Z's, Zs
1.
the 26th and last letter and the 20th consonant of the modern English alphabet
2.
a speech sound represented by this letter, in English usually a voiced alveolar fricative, as in zip
3.
  1. something shaped like a Z
  2. (in combination): a Z-bend in a road

Z

symbol
1.
any unknown, variable, or unspecified factor, number, person, or thing
2.
(chem) atomic number
3.
(physics) impedance
4.
zone
5.
(currency) zaïre
abbreviation
6.
Zambia (international car registration)

zeta

/ˈziːtə/
noun
1.
the sixth letter in the Greek alphabet (Ζ, ζ), a consonant, transliterated as z
Word Origin
from Greek, of Semitic origin; compare Hebrew sādhē

Zeta

/ˈziːtə/
noun
1.
(foll by the genitive case of a specified constellation) the sixth brightest star in a constellation: Zeta Tauri

ZETA

/ˈziːtə/
noun
1.
a torus-shaped apparatus used for research in the 1950s and early 1960s on controlled thermonuclear reactions and plasma physics
Word Origin
C20: from z(ero-)e(nergy) t(hermonuclear) a(pparatus)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for z

Z

not a native letter in Old English; in Anglo-French words it represents the "ts" sound (e.g. Anglo-French fiz, from Latin filius, modern Fitz); from late 13c. it began to be used for the voiced "s" sound and had fully taken that role by 1400. For letter name, see zed.

Thou whoreson Zed, thou vnnecessary Letter. ["King Lear," II.ii.69]
Series of zs to represent a buzzing sound first attested 1852; zees "spell of sleep, a nap" is slang first recorded 1963, American English student slang.

zeta

Greek letter, see zed.

Online Etymology Dictionary, © 2010 Douglas Harper
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z in Medicine

zeta ze·ta (zā'tə, zē'-)
n.

Symbol ζ The sixth letter of the Greek alphabet.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for z

Z 1

noun

Some sleep; a nap: If he wants a few zees we can go on automatic

verb

To sleep; snooze; cop zs: Gotta Z a little while

[1960s+; fr the conventional sibilant or buzzing sound attributed to a sleeping or snoring person]

Z 2

noun

An ounce of a narcotic: trips to the rundown neighborhood to purchase Zs (ounces) and even Ks (kilograms) of cocaine

[1960s+ Narcotics; fr the conventional abbreviation of ounce, ''oz'']

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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Idioms and Phrases with z
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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