1. the number 0; nothing
2. the point on a scale from which positive and negative quantities are measured
3. a person or thing of no importance or value
Usage: informal

1. having no quantity or number; amounting to nothing

1. to adjust an instrument to a zero point
2. to focus attention on something
Usage: informal

Examples

• The temperature dropped to zero degrees.
• She scored zero points in the game.
• Set the scale to zero before weighing.
• There is zero chance of rain today.
• The pilot zeroed the altimeter.
• We need to zero in on the main problem.
• His bank account balance was zero.
• The countdown reached zero and the rocket launched.