/nul/ , adj.
1. without value, effect, consequence, or significance.
2. being or amounting to nothing; nil; lacking; nonexistent.
3. Math. (of a set)
a. empty.
b. of measure zero.
4. being or amounting to zero.
5. null and void , without legal force or effect; not valid: This contract is null and void.
n.
6. Electronics. a point of minimum signal reception, as on a radio direction finder or other electronic meter.
v.t.
7. to cancel; make null.
[ 1555-65; nullus, equiv. to n ( e ) not + ullus any ]