| 1. | without value, effect, consequence, or significance. |
| 2. | being or amounting to nothing; nil; lacking; nonexistent. |
| 3. | Mathematics. (of a set)
|
| 4. | being or amounting to zero. |
| 5. | Electronics. a point of minimum signal reception, as on a radio direction finder or other electronic meter. |
| 6. | to cancel; make null. |
| 7. | null and void, without legal force or effect; not valid: This contract is null and void. |

| null (nŭl) Pronunciation Key
Of or relating to a set having no members or to zero magnitude. |