critical period definition, critical period meaning | English dictionary

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critical period

  

      n     (Psychol)   a period in a lifetime during which a specific stage of development usually occurs. If it fails to do so, it cannot readily occur afterwards  
English Collins Dictionary - English Definition & Thesaurus  
Collins
critical  
      adj  
1    containing or making severe or negative judgments  
2    containing careful or analytical evaluations  
a critical dissertation     
3    of or involving a critic or criticism  
4    of or forming a crisis; crucial; decisive  
a critical operation     
5    urgently needed  
critical medical supplies     
6    Informal   so seriously injured or ill as to be in danger of dying  
7      (Physics)   of, denoting, or concerned with a state in which the properties of a system undergo an abrupt change  
a critical temperature     
8    go critical   (of a nuclear power station or reactor) to reach a state in which a nuclear-fission chain reaction becomes self-sustaining  
  critically      adv  
  criticalness      n  


critical angle  
      n  
1    the smallest possible angle of incidence for which light rays are totally reflected at an interface between substances of different refractive index  
2       another name for       stalling angle  
critical apparatus  
      n   the variant readings, footnotes, etc. found in a scholarly work or a critical edition of a text,   (Also called)    apparatus criticus  
critical constants  
      pl n   the physical constants that express the properties of a substance in its critical state  
   See       critical pressure       critical temperature  
critical damping  
      n     (Physics)   the minimum amount of viscous damping that results in a displaced system returning to its original position without oscillation.,   (Symbol)    Cc  
critical mass  
      n   the minimum mass of fissionable material that can sustain a nuclear chain reaction  
critical path analysis  
      n   a technique for planning complex projects by analysing alternative systems with reference to the critical path, which is the sequence of stages requiring the longest time  
   Compare       programme evaluation and review technique  
critical period  
      n     (Psychol)   a period in a lifetime during which a specific stage of development usually occurs. If it fails to do so, it cannot readily occur afterwards  
critical point  
      n  
1      (Physics)  
a    the point on a phase diagram that represents the critical state of a substance  
b       another name for       critical state  
2      (Maths)      the U.S. name for       stationary point  
critical pressure  
      n   the pressure of a gas or the saturated vapour pressure of a substance in its critical state  
critical region  
      n   that part of a statistical distribution in which the probability of a given hypothesis is less than the chosen significance level, so that the hypothesis would be rejected  
critical state  
      n   the state of a substance in which two of its phases have the same temperature, pressure, and volume,   (Also called)    critical point  
critical temperature  
      n   the temperature of a substance in its critical state. A gas can only be liquefied by pressure alone at temperatures below its critical temperature  
critical volume  
      n   the volume occupied by one mole or unit mass of a substance in its critical state  

English Collins Dictionary - English Definition & Thesaurus  

Collins

critical

  
1    captious, carping, cavilling, censorious, derogatory, disapproving, disparaging, fault-finding, nagging, niggling, nit-picking     (informal)   on someone's back     (informal)   scathing  
2    accurate, analytical, diagnostic, discerning, discriminating, fastidious, judicious, penetrating, perceptive, precise  
3    all-important, crucial, dangerous, deciding, decisive, grave, hairy     (slang)   high-priority, momentous, now or never, perilous, pivotal, precarious, pressing, psychological, risky, serious, urgent, vital  
  
Antonyms     
   appreciative, approving, complimentary, permissive, safe, secure, settled, uncritical, undiscriminating, unimportant  

English Collins Dictionary - English synonyms & Thesaurus  

Collaborative Dictionary     English Definition
n.
Late stage of the Triassic period
Geology
n.
1. a person who greatly dislikes a specified person or thing 2. [informal] a negative, critical, heinous person and more specifically the one who posts hate-filled comments online
Ex: He was described as a misogynist, homophobic, woman hater / That website has become a particularly vitriolic breeding ground for the haters
n.
Lesewut is a German word for "reading craze" (literally) used to describe a specific period in the intellectual history of Germany from the late eighteenth century onward.
n.
a sound (usually a song, jingle) that one hears mentally for a certain period of time
n.
distinctive scent that accompanies the rain and rises up from the ground especially after a period of warm and dry weather
Ex.: And we could smell the scent of wheat and petrichor rising up in the air as a silent clamour.
n.
a series of tweets on the same topic published in a short period
[Tech.]
exp.
sleep for a short period of time, have a light sleep
n.
a website that did not undergo any change for a long period of time
[Comp.];[Slang]
n.
1. [Rel.] expression used to describe metaphorically a period of ignorance and spiritual crisis that precedes the communion with Divinity ; 2. in a larger meaning, it is used when refering to having a hard time, going through a phase of pessimism, sadness, failure etc.
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