Meaning of Z in English

Z

I. ˈzē, chiefly Brit ˈzed, archaic or dial ˈizə(r)d noun

( plural z's or zs -ēz, -dz)

Usage: often capitalized, often attributive

1.

a. : the 26th and last letter of the English alphabet

b. : an instance of this letter printed, written, or otherwise represented

c. : a speech counterpart of orthographic z (as z in zone, haze or French zone, seize )

2. : a printer's type, a stamp, or some other instrument for reproducing the letter z

3. : someone or something arbitrarily or conveniently designated z: as

a. : the 26th in order or class

b. : the 25th in order or class when j is not used

c. : the 23d in order or class when j, v, and w are not used

d. : the third in order or class when x is made the first

4. : something having the shape of the letter z

a Z bar

5.

a. : unknown quantity 1

b. : z-coordinate

6. : a buzzing sound (as of snoring) — usually used in multiples (as z-z or zzz )

II. abbreviation

Usage: often capitalized

1. zero

2. zinc

3. zloty

4. zone

III. symbol

Usage: capitalized

1. atomic number

2. impedance

3. zenith distance

IV. noun

1. or z particle usually capitalized Z : a neutral elementary particle about 90 times heavier than a proton that along with the W particle is a transmitter of the weak force — called also Z 0 or Z 0 particle

2. often capitalized : wink II,1a

catch a few z's on a quiet graveyard shift — Joseph Wambaugh

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.