Z1
/zɛd
/ /ziː/(also z)
noun (plural Zs or Z's)
1The twenty-sixth letter of the alphabet.
1.1Denoting the next after Y in a set of items, categories, etc.
1.2Denoting a third unknown or unspecified person or thing: X sold a car to Y (a car dealer) who in turn sold it to Z (a finance company)
1.3 (usually z) The third unknown quantity in an algebraic expression.
The introduction of x, y, and z as symbols of unknown quantities is due to Descartes (see X1)
1.4 (usually z) Denoting the third axis in a three-dimensional system of coordinates: [in combination]: the z-axis
2A shape like that of a capital Z: [in combination]: the Z-shaped crack in the paving stone
3Used in repeated form to represent the sound of buzzing or snoring: this weather has sucked all the energy out of me ... zzzz
Phrases
catch some (or a few) Zs
Z2
/zɛd/abbreviation
Zambia (international vehicle registration).
symbol Chemistry
Atomic number.