Definition of zero:

part of speech: noun

Cipher: nothing: the point from which a thermometer is graduated.

part of speech: noun

The origin of graduation.

part of speech: noun

A cipher; nothing; neutral point on a scale, of temperature, etc., from which reckoning begins: zero hour, the hour fixed for beginning a military engagement, as an advance, or attack.

part of speech: noun

The cipher 0 : nothing; point from which a thermometer, & c., is graduated.

Usage examples for zero:

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One who, or that which, dips, especially a cup or ladle for water, etc.; a water- fowl; the group ct seven stars, in the northern sky, arranged like a ladle. ...