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second

second

1 7.8
A small unit of angle equal to one sixtieth of a minute
  • noun
  • /ˈsɛkənd/
  • Specialized
: segundo de arco
  • North, 34 degrees, 20 minutes, 16.8 seconds.
  • arc second
  • size of one second
  • arc seconds across

Examples

Synonyms

arcsecond
vssecond
  • Specialized
2 9.9

A very small unit for measuring angles equal to one 3600th of a degree used by astronomers

has identical meaning but differs only in the form of the name

Idioms

107 1.2

Ask someone to wait for a short time

After thinking again, you change your mind

second nature
  • Informal
17 3.5

A habit or skill that feels automatic after a lot of practice

second fiddle
  • Informal
8 6.0

A person who has a less important role and helps someone more important

6 3.5

Time is very important when you need help fast

5 2.5

All the time without stopping

Compounds

271 2.3

An opportunity to try again after making a mistake

153 1.6

The later part of a game after halftime

A thought that makes you doubt or change a decision you already made

Doubts or a change of mind about a decision you already made

A worldwide war from 1939 to 1945 between the Allies and the Axis

49 2.5

A very short moment when something happens

48 3.7

Next in quality or rank after the best

47 2.4

A student in their second year at high school or university

35 3.8

A category below the highest level in rank or quality

A person who helps the leader and takes charge if they are away

33 7.4

The return of Jesus Christ to earth to judge people at the end of the world

31 3.7

The second of four bases a runner touches when running to score

28 4.4

Not as good as the best, often cheap or simple

27 2.8

A child of your parent's first cousin who shares your great-grandparents but not your grandparents

19 2.2

Not new, bought from someone who owned it before

Another language a person learns after their native language

second mortgage
  • Specialized
19 4.9

An extra loan on a house that already has a mortgage

18 4.4

A player who stands near second base and catches or throws the ball to get runners out

second-degree burn
  • Specialized
14 3.4

A skin injury that causes painful blisters and redness

14 3.3

Information received through another person rather than directly

14 2.7

The part of a sports game that comes after the first part

A junior officer with the lowest rank in the Army, Air Force, or Marine Corps

12 4.7

A group of players who replace the usual starters during a game

second wind
  • Informal
11 4.2

A new burst of energy that lets you keep going when you are tired

second trimester
  • Specialized
10 3.1

A period of pregnancy from week 13 to week 27

8 4.2

A player who stands near second base and catches or stops ground balls

8 8.0

A stage in a relationship when people touch above the waist

8 1.8

A person or team that finishes second in a competition

One of thirty-two equal parts of a whole

A meeting of Catholic Church leaders from 1962 to 1965 that changed worship and encouraged talks with other Christian churches

6 7.0

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

A result when someone comes second in a competition

5 2.5

A car setting used after first for low to medium speed and more power

Christians believe Jesus will return to earth to judge people

A player who does not usually play but replaces others when needed

A measure of speed that shows how many kilometers something moves in one second

second sight
  • Literature
4 9.9

To see or know things before they happen

second banana
  • Informal
4 7.6

A person who supports the main performer, often in comedy

4 5.0

An upper seating area at the back of a theatre with the least expensive seats

A woman who cares for someone like a mother, often with or instead of their own mother

second person
  • Specialized
3 3.0

Words that refer to the person or people you speak to, for example 'you'

second deck
  • Specialized
3 6.0

An upper covered area that runs the full length of a large ship

A shop that sells used things at low prices

3 2.6

The hand on a clock that shows seconds

3 1.0

Coming after the forty-first in a series

2 4.1

A unit for frequency equal to one complete cycle in one second

2 7.5

A player who usually sits on the bench and replaces others during games

second power
  • Specialized
1 3.2

The result of multiplying a number by itself

second stomach
  • Specialized
1 7.9

A stomach part in animals like cows that helps break down plant food

1 7.7

A period in old age when mental decline makes a person behave like a young child

Newton's second law
  • Specialized
1 3.4

A rule that shows how force, mass and acceleration relate

second molar
  • Specialized
1 3.5

A large tooth at the back of the mouth behind the first back tooth

second-rater
  • Offensive
1 8.2

A person who is not as good as others at their work

1 7.7

The second time lawmakers discuss and vote on a proposed law

A young forest that came back after the original trees were cut or burned

watt second
  • Specialized
1 5.0

A unit of energy equal to one watt used for one second

bits per second
  • Specialized
1 2.8

A unit that shows how many small pieces of information called bits are sent every second

The return of Jesus Christ to earth to judge all people

A period when Napoleon III ruled France from 1852 to 1870

second law of motion
  • Specialized
1 4.7

A rule that says how a force makes an object move faster depending on its mass

1 4.5

A rule that a force changes an object's motion more when the force is bigger or the object is lighter

A player who does not start games and replaces starters when needed

light second
  • Specialized
1 6.7

The distance light travels in one second in empty space, about 300,000 kilometers

second brain
  • Jargon
1 6.5

A system or tool that stores information to help you remember and organize things

leap second
  • Specialized
1 6.8

An extra second added to clocks so they match how fast the Earth turns

1 8.9

A period in German history from 1871 to 1919 when the country was an empire

A war between China and Japan from 1894 to 1895 that ended in a clear Japanese victory

A military campaign by European Christians in the 1100s to take back the Holy Land that failed because leaders fought

1 3.0

By a cheaper travel or mail service that is slower than first class

A unit for measuring how fast a computer processor runs, equal to one million instructions per second

second sacker
  • Jargon
1 7.3

A baseball player who plays at second base

Kepler's second law
  • Specialized
1 7.9

A planet's line to the sun covers equal areas in equal times

A church meeting in 787 that stopped destroying religious images and allowed their use in worship

Surface Forms

second singular
seconds plural

Etymology

Second for angular measure is like the time unit: it is the 'second small part' after the minute of arc, so a second of arc is a very small part of a degree.