(chiefly Britain) subject to no value-added tax when sold (but the supplier can still recover VAT attributable to it)

Alternative form of aleph-null

Originally, the point on the land or water surface below which a nuclear bomb detonates in the air; now also the point on such a surface at or above the detonation.

(of a temperature) below 0°C; freezing cold

Alternative spelling of nonzero

simple past tense and past participle of zero-rate

(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.

(geometry) Having zero dimensions; having no extent in any direction.

(firearms) The adjustment of a sight, exactly parallel to the axis of the bore of the gun to which it is attached.

(physics) associated with zero on any scale, but particularly with a temperature of absolute zero