statutory instrument
noun[CorU]
UKukus(abbreviationSI)LAW
in the UK and some othercountries, atypeofordermade by agovernmentministerthat has theeffectof alaw:
Thestatutoryinstrumenthas made NIrulesreflectPAYErulesfromApril5.
by statutory instrumentIf there is aloopholeregardingtheleasingofland, we will have tocloseit, bystatutoryinstrumentifnecessary.