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in the PONS Dictionary

null [nʌl] ADJ pred, inv esp LAW

null
to declare sth null
to make [or render] sth null
etw null und nichtig machen

null hy·ˈpo·the·sis N MATH

null hypothesis N CTRL

null and ˈvoid ADJ pred, inv esp LAW

null and void
to declare sth null and void
to make [or render] sth null and void
etw null und nichtig machen