the symbol or numeral 0, representing the complete absence of any quantity or magnitude
the point, marked 0, from which positive or negative quantities are reckoned on a graduated scale, as on a thermometer; specif.,
on a centigrade thermometer, the freezing point of water
on a Fahrenheit thermometer, a point 32° below the freezing point of water
a temperature that causes a thermometer to register zero
the point intermediate between positive and negative quantities
nothing
the lowest point: his chances of success sank to zero
Gunnery a sight setting for a range, allowing for both elevation and windage
adjective
of or at zero
without measurable value
Informal not any; no: a snack having zero cholesterol
Aeron.
designating or of a ceiling that is at or near the ground, specif. one at a height of fifty feet or lower
designating or of visibility along the ground regarded as within the limit of a few feet
Linguis. designating a hypothetical inflectional form: the plural of deer is said to be formed by the addition of a zero allomorph of the plural morpheme