say it: reg-yuh-LAY-shuhn
regulation is a noun and adjective meaning "an authoritative rule". It carries 7 recorded senses.
“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
embryology
the act of bringing to uniformity; making regular
the act of controlling or directing according to rule
“fiscal regulations are in the hands of politicians”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for regulation come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.