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critical

critical

66 8.0
At the point where a sudden change or reaction can happen
  • adjective
  • /ˈkrɪtɪkəl/
  • Specialized
translation icon : crítico
  • Hope to reach a point of critical mass that'll start a chain reaction of people coming forward.
  • critical mass
  • critical value
  • critical threshold

Examples

  • Mankind must unite at this critical juncture.

  • But right now this is getting to critical mass.

  • All I need is enough evidence to convince a critical mass of people.

    Fiction book (2000)
  • And blood pressure drops, heart rate drops to critical level.

  • Listen, Dr. Rumack says the sick people are in critical condition.

  • Although AID now plays a larger role, PVOs still occupy a critical position within the program.

    Academic text (1991)
  • It ended up gathering sort of a critical mass of regular attendees.

  • Sahn's mom knows what the experts know: Sahn is at a critical point.

    Academic text (2011)
  • Perhaps a more critical factor in the nuclear equation is Saudi Arabia's economic outlook.

    Academic text (2013)
  • The experiment will only succeed if it reaches a point of critical mass for the nuclear reaction.

Antonyms

1 4.1

Not serious or urgent and not part of a dangerous situation

Compounds

Thinking carefully about information to make a clear decision

19 5.6

Enough people or support for something to start and keep going

A moment when people must make an important decision

Praise and respect from critics for a work like a film or book

A close study of a text or work of art to judge its strengths and weaknesses

critical mass
  • Specialized
2 6.2

The smallest amount of nuclear material needed to start and keep a chain reaction

A situation that needs attention right away because it is very serious

Information that is very important for a decision or task

An article that says if a book, play, or film is good and explains why

A careful step-by-step check of information to decide how useful or true it is

1 4.2

A long article that summarises research on a topic and judges its quality

critical angle
  • Specialized
6.4

The smallest angle at which light hits a surface and is totally reflected inside a material

9.9

A set of notes and comments that show different text versions and the editor's choices

How Critical

supercritical
  • Specialized
1 8.0
critical
  • Specialized
66 8.0
subcritical
  • Specialized
7.5

Surface Forms

critical positive

Morphology

critical = critic (opaque) = critic + al

The scientific and crisis-related senses of critical are historically connected to the same root, but they are not predictable from critic + -al for most learners.

Etymology

Critical comes from the old Greek kritikos, from krinein meaning 'to judge', and it carried the idea of a deciding point. That's why in science critical describes the exact point or mass where a sudden or important change can happen, like a reactor starting a chain reaction.