(astronomy) The three laws of planetary motion discovered by Kepler in the early 17th century, stating that (i) the orbit of a planet is an ellipse with the Sun at one of the two foci, (ii) a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time, and (iii) the square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.

(physics) a law of electromagnetic induction which states that an electromotive force, induced in a conductor, is always in such a direction that the current it would produce would oppose the change which caused it; it is a form of the law of conservation of energy

Obeying the laws of society; not a lawbreaker; without a criminal record.

(law) The area of law that deals with ships at sea and the rights of sailors, passengers, and owners of cargo.

(chemistry) Any of the laws of nature that are relevant to chemistry.

(law) the area of law concerned with the ownership and conveyance of property rights and title. / The formal course in property law required of most first-year law school students in common-law systems.

(physics) A law which shows that the magnetic susceptibility of a paramagnetic dipole is inversely proportional to the absolute temperature; the basis of operation of magnetic thermometers.

(physics) The observation that the pressure of an ideal gas is inversely proportional to its volume at constant temperature.

(physics) The law stating that the density of an ideal gas is inversely proportional to its temperature at constant pressure.

(law) Any law that makes a prior legal act illegal, or increases the penalty for a prior illegal act.