Definición de reaction en inglés:

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Pronunciación: /rēˈakSH(ə)n/


1An action performed or a feeling experienced in response to a situation or event: Carrie’s immediate reaction was one of relief
Más ejemplos en oraciones
  • And for an immediate reaction to today's events I think we can speak to Tom Hilton.
  • Fifth, anger can be an immediate reaction to an isolated event or it can be a response after numerous events.
  • I accept full responsibility for my reaction to a bad situation.
response, answer, reply, rejoinder, retort, riposte
informal comeback
1.1 (reactions) A person’s ability to respond physically and mentally to external stimuli: a skilled driver with quick reactions
Más ejemplos en oraciones
  • The drink he had had would have affected his judgement, ability to ride and reactions.
  • The driver's reactions and abilities wouldn't enter into it.
  • You will soon develop quicker reactions and a sixth sense for when someone is going to do something unorthodox.
1.2An adverse physiological response to a substance that has been breathed in, ingested, or touched: such allergic reactions as hay fever and asthma
Más ejemplos en oraciones
  • Other adverse effects of ticlopidine include neutropenia, adverse skin reactions and gastrointestinal side effects.
  • Other measures that should be performed to minimize the risk of adverse reactions to allergen immunotherapy are listed in Table 6.
  • Patients were reassessed on day 4 of therapy for clinical and laboratory responses and for adverse reactions to the medication.
1.3A chemical process in which two or more substances act mutually on each other and are changed into different substances, or one substance changes into two or more other substances.
Oraciones de ejemplo
  • There are many important industrial processes that use electrophilic reactions.
  • By contrast, making Kevlar involves a complex series of organic reactions in hot sulphuric acid at high pressures.
  • More to the point, it has facilitated many reactions that depend upon acetic acid as a reagent or solvent.
1.4 Physics An analogous transformation of atomic nuclei or other particles.
Oraciones de ejemplo
  • Furthermore, the compound nuclei produced in cold-fusion reactions contain a relatively small number of neutrons.
  • It studies the structure of nuclei, and their reactions and interactions.
  • They're produced during nuclear fusion, the reaction that lights the sun and other stars.
1.5A mode of thinking or behaving that is deliberately different from previous modes of thought and behavior: the work of these painters was a reaction against fauvism
Más ejemplos en oraciones
  • Mawo started in January of 2002 as a reaction against aggressive war behavior of the United States.
  • I think this tendency is a reaction against previous generations' parenting styles.
  • But among the younger generation there has been a reaction against the positivist and analytical traditions.
backlash, counteraction
1.6Opposition to political or social progress or reform: the institution is under threat from the forces of reaction
Más ejemplos en oraciones
  • It is no coincidence that this development has occurred during a period of deepening social and political reaction.
  • This process of social and political reaction cannot be adequately explained as the result of the evil intentions of one or another president.
  • American politics has assumed the form of a sweeping social reaction, aimed at overturning the reformist legacy of the New Deal.
1.7 Physics Repulsion or resistance exerted in opposition to the impact or pressure of another body; a force equal and opposite to the force giving rise to it.
Oraciones de ejemplo
  • In response to the motion, the elastic reaction force exerted on the site by the substrate starts to rise.
  • Newton's third law states that for every action there's an equal and opposite reaction.
  • At the same time, the centrifugal forces of interest and reaction caused local people to reconceive the boundaries of their nation.



Pronunciación: /rēˈakSH(ə)nəst/
sustantivo& adjetivo
Oraciones de ejemplo
  • In every war it was the opportune time for the reactionist and commercial vulture to do his dirty work in the name of patriotism.
  • They are using their reactionist tactics to try and scare people away from real issues.


Mid 17th century: from react + -ion, originally suggested by medieval Latin reactio(n-), from react- 'done again' (see react).

For editors and proofreaders

División en sílabas: re·ac·tion

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