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law

law

206 5.0
A general rule from repeated observations that explains how nature works
  • noun
  • /lɔː/
  • Specialized
translation icon : ley
  • Scientists rely on the law of conservation of energy in their experiments.
  • inverse law
  • Zipf's law
  • physical laws

That's the like the laws of physics of their system.

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Examples

  • It's the law of economics.

  • We can use the law of sines for this one.

  • And that is what the law of thinking is.

  • Hi, in this video we're going to introduce the law of signs.

  • Have you ever heard of the law of secondary gain?

  • We are restricted by the laws of nature.

  • The member countries of the COMECON have ignored environmental policy and law for over three decades.

    Academic text (1990)
  • I've been having some trouble with the laws governing chemical bonds.

  • The law of gravity explains why objects fall towards the Earth.

  • According to the law of supply and demand, prices tend to rise when demand exceeds supply.

Synonyms

principle
vslaw
633 3.8

A basic idea or law that explains how something works

is an empirical generalization based on repeated observations not just a basic idea
law of physics
vslaw
  • Specialized
28 3.8

A rule that describes how nature behaves, often shown with a formula

is broader applying to scientific generalizations beyond just the material world
law of nature
vslaw
  • Specialized
21 3.9

A basic rule scientists find about how the world works

refers specifically to a scientific generalization based on repeated observations

Idioms

12 5.5

Tell people firmly what they must do

4 6.3

A situation where only the strongest people succeed without fair rules

The power of police to find and catch criminals far away

word is law
  • Informal
1 8.5

People must do what someone says without question

8.4

What the mother decides must be followed without question

his word is law
  • Informal
7.6

People must do what one person says without question

9.3

When things can go wrong, they often do

Compounds

660 3.2

The work police do to stop crime, find criminals, and make people obey the law

496 2.1

A person related to you by marriage, for example your spouse's parent or sibling

272 3.2

A school where students study to become lawyers

173 2.6

A company of lawyers who give legal help to people and companies

153 1.6

A man in your family by marriage, for example your spouse's brother or your sister's husband

112 1.6

The mother of your husband or wife

rule of law
  • Formal
89 3.7

All people and organizations, including officials, must follow the same fair laws

85 2.1

A man who is married to your daughter

82 1.3

A sister of your husband or wife

76 3.2

A place where a judge hears and decides cases about the law

Rules that countries follow when they deal with each other

71 1.4

The father of your husband or wife

63 3.4

Following the law and not breaking rules

A woman who is married to someone's son

A group that makes sure people follow rules and stops crime and finds who did it

40 2.6

A student who studies law at a university or law school

martial law
  • Formal
37 7.7

Temporary military rule over a country that replaces normal law during a war or crisis

31 4.7

Main laws of a country made by its government

31 3.0

A university certificate that shows someone finished law studies

criminal law
  • Specialized
30 3.4

Rules that say which acts are crimes and how people are punished

law of physics
  • Specialized
28 3.8

A rule that describes how nature behaves, often shown with a formula

natural law
  • Formal
26 6.5

A set of moral rules that come from human nature and apply to everyone

tax law
  • Specialized
25 2.9

Rules that tell how governments set and collect taxes

law of nature
  • Specialized
21 3.9

A basic rule scientists find about how the world works

common law
  • Specialized
19 3.8

A system where judges use past court decisions and customs rather than written laws

case law
  • Specialized
18 5.6

Judges make rules from earlier court decisions

17 8.3

Law based on Islamic teachings that guides family and personal life

15 4.8

A system of rules for life and law based on the Qur'an and the Prophet Muhammad's teachings

10 3.7

A business where lawyers give legal help to people and companies

civil law
  • Specialized
8 4.1

A system of law about private rights and disputes between people

antitrust law
  • Specialized
8 4.3

Government rules that stop one company from controlling a market and protect competition

8 2.5

A book that gives official rules and legal information

matter of law
  • Formal
8 7.4

An issue a judge decides about how the law applies

law of thermodynamics
  • Specialized
8 5.4

A basic rule that explains how energy moves and changes in closed systems

7 3.7

The rules a country or state has about when and how people can legally end a pregnancy

7 5.5

A rule that the government must follow fair legal steps before taking someone's life, freedom, or property

5 2.2

A person who makes sure people follow the law, like a police officer or sheriff

Work a lawyer does to give advice, prepare documents, and represent people in court

corporate law
  • Specialized
5 3.9

Rules about how companies are formed, run, and controlled

5 9.0

Laws in the United States that kept Black and white people apart, mainly in the South

patent law
  • Specialized
5 4.9

Rules about who owns and can use an invention

administrative law
  • Specialized
4 5.3

Rules and decisions that tell government agencies how to act

military law
  • Specialized
4 5.0

Rules that control the behavior, trials, and punishments of people in the armed forces

canon law
  • Specialized
4 8.9

Rules made by a Christian church to govern its members

4 3.7

Doing things that are illegal

4 6.6

Religious laws given by God to the Israelites through Moses, including the Ten Commandments

4 7.0

Energy naturally spreads from hot places to cold ones, increasing disorder

law of motion
  • Specialized
3 3.9

A rule that shows how pushes and pulls change how things move, for example by starting or stopping

maritime law
  • Specialized
3 6.0

Law about ships, navigation, and trade at sea

securities law
  • Specialized
3 6.0

Rules about how companies sell or issue stocks and bonds

unwritten law
  • Specialized
3 7.2

A rule people follow because of custom rather than being made by the government

contract law
  • Specialized
3 4.1

Law that deals with agreements and the duties people or businesses have to each other

law of nations
  • Specialized
3 6.7

Rules that tell how countries must act with each other

blue law
  • Formal
2 9.3

A law that stops shops and some activities on Sundays or religious holidays

All people get the same treatment under the law

2 3.1

A place where a judge hears cases and gives decisions

Newton's law
  • Specialized
2 3.8

Three basic rules that explain how pushes and pulls change the motion of objects

common-law marriage
  • Specialized
2 4.3

A relationship the law accepts when a couple live together and behave as if married

2 8.2

A rule people believe comes directly from God rather than from laws made by people

lemon law
  • Formal
2 4.2

A law that helps buyers get a refund or replacement for vehicles that keep breaking

2 6.6

A funny idea that if something can go wrong, it will

Roman law
  • Specialized
2 8.1

A system of rules used in ancient Rome that influenced many modern civil laws

Newton's third law
  • Specialized
1 4.1

When one object pushes another, the other object pushes back equally

color of law
  • Formal
1 8.9

Acting as if you have legal power when you do not, often to do illegal acts

admiralty law
  • Formal
1 7.9

Rules that deal with ships, boats, and activities at sea

1 5.6

A set of basic rules that explains how a country's government works and what rights people have

law of large numbers
  • Specialized
1 5.9

When a sample gets larger, its average gets closer to the average of the whole group

1 7.2

After a point, adding more work gives smaller extra results

1 6.0

An area of law about marriage, divorce, and family matters

higher law
  • Formal
1 8.4

A moral rule that is more important than rules made by the government

1 3.5

Three basic rules that explain how objects move and push each other in physics

public law
  • Specialized
1 4.6

Rules about how the government deals with people and society

1 7.7

A matter a judge decides about how to understand a law

How Certain

law
  • Specialized
206 5.0
theory
3.2
hypothesis
138 6.1
guess
768 1.0

Surface Forms

law singular
laws plural

Etymology

Law comes from an old word meaning 'to lay', as in lay. In science, a law is a regular rule that seems to be 'laid down' by nature because it happens the same way again and again, so we can rely on it.