Initialism of zinc-aluminium (alloy).

(physics) The coldest possible temperature, zero on the Kelvin scale, or approximately −273.15 °C, −459.67 °F; total absence of heat; temperature at which motion of all molecules would cease.

(astrology) The belt-like region of the celestial sphere approximately eight degrees north and south of the ecliptic which include the apparent path of the sun, moon, and visible planets.

(US, Canada, slang, 1970s, 1980s) Pizza.

Nonstandard spelling of the, mimicking foreign accents.

An expression of surprise or confusion; compare wha, huh, eh.

(basketball, soccer) A defense in which each player covers an area of the court.

(mathematics) a vector whose value in every dimension is zero. i.e. ⃑0=<0,0,…,0> / (linear algebra) a vector 0 in a vector space V such that for any v∈V, 0+v=v

A landmark hill (or "mount") in the land of Israel on which ancient Jerusalem was partly built, a centerpiece to Biblical accounts of old days and future eschatological events.

(computing) A signed magnitude representation of zero in which the sign bit indicates a positive number.