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rule US English

One of a set of explicit or understood regulations or principles governing conduct within a particular activity or sphere

divide and conquer US English

The policy of maintaining control over one’s subordinates or subjects by encouraging dissent between them

rule US Thesaurus

health and safety rules

em rule US English

A long dash (—) used in punctuation

en rule US English

A short dash (-) used in punctuation, in particular between figures to show a range (for example, 1939–45)

Rule 43 US English

(In the UK) a prison regulation whereby prisoners, typically sex offenders, can be isolated or segregated for their own protection

area rule US English

In the design of transonic and supersonic aircraft, the principle that the longitudinal variation of the cross-sectional area of an aircraft should approximate to that of the shape subject to the least drag at the speed in question.

day rule US English

A rule or order of court, authorizing a prisoner to leave prison for one day. Compare earlier day writ.

foot rule US English

A foot-long measuring instrument

gag rule US English

A regulation or directive that prohibits public discussion of a particular matter, in particular

home rule US English

The government of a colony, dependent country, or region by its own citizens

mob rule US English

Control of a political situation by those outside the conventional or lawful realm, typically involving violence and intimidation

pica rule US English

= pica ruler.

rat rule US English

A rule or regulation governing the behaviour of freshmen or new cadets.

rule box US English

A rectangle formed by ruled or printed lines.

rule nisi US English

A ruling taking effect after a particular period of time, unless cause be shown within the period why it should not.

self-rule US English

Another term for self-government111.

work rule US English

One of a set of regulations governing working procedures, conditions, etc., in a business or industry.

Allen's rule US English

An empirical rule according to which the appendages of a warm-blooded animal are smaller in populations occupying the cooler parts of its geographical range.

direct rule US English

A system of government in which a province is controlled by a central government

golden rule US English

A basic principle that should be followed to ensure success in general or in a particular activity

ground rule US English

A basic principle

house rule US English

Household management (rare).

phase rule US English

A rule relating the possible numbers of phases, constituents, and degrees of freedom in a chemical system

plumb rule US English

A plumb line attached to a board, used by builders and surveyors

as a rule US English

Usually, but not always

rule-bender US English

Originally Typography. A machine for bending straight pieces of metal.

rule-bound US English

Overly limited or restricted by rules

rule joint US English

A movable joint such as is used in folding rulers or table flaps.

rule-maker US English

A person who draws up a rule or rules; a maker of regulations.

rule-making US English

The action of drawing up a rule or rules; the making of regulations; an instance of this.

rule-right US English

Linguistics. Of a word, form, or feature: having mutated or developed according to a particular rule; regular.

rule-staff US English

A measuring rod.

school rule US English

(Originally) a principle or doctrine of the schools; (later) a regulation governing the behaviour of pupils at a school.

slide rule US English

A ruler with a sliding central strip, marked with logarithmic scales and used for making rapid calculations, especially multiplication and division

decision rule US English

A formula or principle used to choose a course of action, in response to any given input of data.

indirect rule US English

A system of government of one nation by another in which the governed people retain certain administrative, legal, and other powers

left-hand rule US English

A mnemonic (proposed by J. A. Fleming (1849–1945), English electrical engineer), concerning the behaviour of a current-carrying conductor in a magnetic field, according to which the directions of the magnetic field, the current, and the force exerted on the conductor are indicated respectively by the first finger, second finger, and thumb of the left hand when these are held out perpendicular to each other.

majority rule US English

The principle that the greater number should exercise greater power

minority rule US English

A system of government in which the governing party of a country represents only a small proportion of the overall population

passing rule US English

A rule about when and how vehicles should overtake one another.

Ponsonby rule US English

A constitutional convention by which the Government may ratify a treaty or agreement without parliamentary approval once it has been open to parliamentary scrutiny for a period of twenty-one days and raised no objections.

Porson's rule US English

= Porson's Law.

rewrite rule US English

= rewriting rule.

rule absolute US English

A ruling taking effect immediately, fully, and unconditionally, and not liable to subsequent challenge or rescindment; also in extended use.

rule-proving US English

(Of an exception) that proves the rule.

Simpson's rule US English

An arithmetical rule for estimating the area under a curve where the values of an odd number of ordinates, including those at each end, are known

advantage rule US English

= advantage law.

fifty-year rule US English

A rule that public records may be open to inspection after a lapse of fifty years. Superseded in the UK in 1968 by the thirty-year rule

five-second rule US English

A notional rule stating that food which has been dropped on the ground will still be uncontaminated with bacteria and therefore safe to eat if it is retrieved within five seconds

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