Definitions from Wiktionary (Null)

▸ noun:  A non-existent or empty value or set of values.
▸ noun:  Zero quantity of expressions; nothing.
▸ noun:  Something that has no force or meaning.
▸ noun:  (computing) The null character; the ASCII or Unicode character (␀), represented by a zero value, which indicates no character and is sometimes used as a string terminator.
▸ noun:  (computing) The attribute of an entity that has no valid value.
▸ noun:  One of the beads in nulled work.
▸ noun:  (statistics) The null hypothesis.
▸ adjective:  Having no validity; "null and void".
▸ adjective:  Insignificant.
▸ adjective:  Absent or non-existent.
▸ adjective:  (mathematics) Of the null set.
▸ adjective:  (mathematics) Of or comprising a value of precisely zero.
▸ adjective:  (genetics, of a mutation) Causing a complete loss of gene function; amorphic.
▸ adjective:  (mechanical engineering, of a position or setting) Neutral.
▸ verb:  (transitive, archaic) To nullify; to annul.
▸ verb:  To return to the null position, setting, etc.
▸ verb:  To form nulls, or into nulls, as in a lathe.
▸ verb:  (computing, slang, transitive) To crack; to remove restrictions or limitations in (software).
▸ noun:  A surname.
▸ Also see null

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