An observation that, in a parliamentary election, the ration of seats won by each party is proportional to the cube of the percentage of the vote obtained by each party

plural of ruling grade

(rail transport) synonym of ruling gradient

The principle that one should treat people the way they want to be treated, as opposed to the way you want them to treat you.

Dated form of slide rule.

An ecogeographical rule stating that latitudinal ranges of plants and animals are generally smaller at lower latitudes than at higher latitudes.

A narrow board with a plumb line fastened to the top, used to determine a perpendicular.

A long, straight-edged rule used by bricklayers for keeping their work even.

(finance) Of a deal: concluded by the secretary of the stock exchange when the actual dealer has failed to do so.

Synonym of island rule