noun
fixed law; established rule
A formal term for a law or rule that is fixed and unchanging, often used in legal, philosophical, or scientific contexts.
自然の定律に従って、惑星は太陽の周りを回る。
According to the fixed laws of nature, planets revolve around the sun.
この社会には暗黙の定律が存在する。
There are implicit fixed rules in this society.