1. aught, cipher, cypher, goose egg, nada, naught, nil, nix, nothing, null, zero, zilch, zip, zippo

a quantity of no importance

Example Sentences:
'it looked like nothing I had ever seen before'
'reduced to nil all the work we had done'
'we racked up a pathetic goose egg'
'it was all for naught'
'I didn't hear zilch about it'

• aught
• cipher
• cypher
• goose egg
• nada
• naught
• nil
• nix
• nothing
• null
• zilch
• zip
• zippo

2. 0, cipher, cypher, nought, zero

a mathematical element that when added to another number yields the same number

• 0
• cipher
• cypher
• nought

3. zero, zero point

the point on a scale from which positive or negative numerical quantities can be measured

• zero point

4. zero

the sight setting that will cause a projectile to hit the center of the target with no wind blowing

5. zero

adjust (an instrument or device) to zero value

6. zero, zero in

adjust (as by firing under test conditions) the zero of (a gun)

Example Sentences:
'He zeroed in his rifle at 200 yards'

• zero in

7. 0, zero

indicating the absence of any or all units under consideration

Example Sentences:
'a zero score'

• 0

8. zero

having no measurable or otherwise determinable value

Example Sentences:
'the goal is zero population growth'

9. zero

indicating an initial point or origin

10. zero

of or relating to the null set (a set with no members)