Zero is a numerical figure which is defined as the lack of any quantity.(noun)
An example of zero is no cookies left in the jar.
The definition of zero is 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
Origin: Fr zéro < It zero < Ar ṣifr, cipher
See zero in American Heritage Dictionary 4
noun pl. ze·ros or ze·roes
Origin: , from alteration of Medieval Latin zephirum
Origin: , from Arabic ṣifr, nothing, cipher; see cipher.
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