Having no legal force; invalid: render a contract null and void.
Of no effect, result, or price; insignificant.
Amounting to nothing; missing or nonexistent: a null result.
Mathematics Of or associated with a collection having no people or even zero magnitude.
Having no substance, "null and void"
missing or non-existent
of null set
of or comprising a value of properly zero
causing a total losing gene purpose, amorphic.
Of no appropriate or binding force or substance; of no efficacy; invalid; void; nugatory; useless.
Having a value of zero.
Empty; having no members.
Unassigned or meaningless; -- a special worth directed at variables, especially pointers or reasonable factors, suggesting that it's meaningless and cannot be utilized in computation. The actual value which kept in memory to indicate the null condition may vary with the computer system language made use of.