"regulation" in the noun sense
1. regulation, ordinance
an authoritative rule
2. rule, regulation
a principle or condition that customarily governs behavior
"it was his rule to take a walk before breakfast"
"short haircuts were the regulation"
the state of being controlled or governed
embryology) the ability of an early embryo to continue normal development after its structure has been somehow damaged or altered
5. regulation, regularization, regularisation
the act of bringing to uniformity making regular
6. regulation, regulating
the act of controlling or directing according to rule
"fiscal regulations are in the hands of politicians"
"regulation" in the adjective sense
prescribed by or according to regulation
"regulation army equipment"
Source: WordNet® (An amazing lexical database of English)
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