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zero

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Zero is a numerical figure which means the lack of any quantity. (noun)

An example of zero is no cookies left in the jar.

Zero means having no measurable growth or quantity. (adjective)

A soccer team with no points is an example of a team with a zero score.

See zero in Webster's New World College Dictionary

noun pl. zeros or zeroes

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.,
1. on a centigrade thermometer, the freezing point of water
2. 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.
1. designating or of a ceiling that is at or near the ground, specif. one at a height of fifty feet or lower
2. 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

transitive verb zeroed, zeroing

to adjust (an instrument, etc.) to a zero point or to an arbitrary point from which all positive and negative readings are to be measured

See zero in American Heritage Dictionary 4

(zîrˈō, zēˈrō)

noun pl. ze·ros or ze·roes

The numerical symbol 0; a cipher.
Mathematics
a. The identity element for addition.
b. A cardinal number indicating the absence of any or all units under consideration.
c. An ordinal number indicating an initial point or origin.
d. An argument at which the value of a function vanishes.
The temperature indicated by the numeral 0 on a thermometer.
A sight setting that enables a firearm to shoot on target.
Informal One having no influence or importance; a nonentity: a manager who was a total zero.
The lowest point: His prospects were approaching zero.
A zero-coupon bond.
Informal Nothing; nil: Today I accomplished zero.

adjective

Of, relating to, or being zero.
a. Having no measurable or otherwise determinable value.
b. Informal Absent, inoperative, or irrelevant in specified circumstances: “The town has . . . practically no opportunities for amusement, zero culture” (Robert M. Adams).
Meteorology
a. Designating a ceiling not more than 16 meters (52 feet) high.
b. Limited in horizontal visibility to no more than 55 meters (180 feet).
Linguistics Of or relating to a morpheme that is expected by an established, regular paradigm but has no spoken or written form. Moose has a zero plural; that is, its plural is moose.

transitive verb ze·roed, ze·ro·ing, ze·roes

To adjust (an instrument or a device) to zero value.

Phrasal Verbs: zero in

a. To aim or concentrate firepower on an exact target location.

b. To adjust the aim or sight of by repeated firings.

To converge intently; close in: The children zeroed in on the display of toys in the store window. zero out To eliminate (a budget or budget item) by cutting off funding. To reduce to zero.

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