Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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pronunciation:
nuhl
features:
Word Combinations (adjective)
part of speech: adjective
definition 1: not having any legal force; invalid.
similar words:
void
definition 2: not having any value or consequence; insignificant.
definition 3: being or amounting to nothing; nonexistent.
definition 4: in mathematics, not having any elements or members.
a null set
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