定律

定律	dìng lǜ	scientific law (e.g. law of conservation of energy) / (in human affairs) a generalization based on observation (e.g. "power corrupts")
定	dìng	to fix; to set; to make definite / to subscribe to (a newspaper etc); to book (tickets etc); to order (goods etc) / to congeal; to coagulate / (literary) definitely
律	Lǜ	surname Lü
律	lǜ	law