1 (response) reacción; (f) what was his reaction to your suggestion? ¿cuál fue su reacción a tu sugerencia?; ¿cómo reaccionó frente a tu sugerencia?; it produced no reaction no surtió efecto; some foods cause allergic reactions algunos alimentos provocan reacciones alérgicas
I usually have a bad reaction to penicillin my immediate reaction was one of revulsion reactions to the visit have been mixed we were not prepared for the violence of his reaction the initial reaction of most participants is fear he was surprised that his answer should have caused such a strong reaction every year, 5000 people have life-threatening reactions to anaesthetics common foods which cause this kind of reaction are fish, eggs, and shellfish socialism was a reaction against a feudal past all new fashion starts out as a reaction against existing convention her three years of freedom seemed like a reaction against that childhood premature moves in this respect might well provoke a reaction against socialism
2 reactions (reflexes) reacciones; (f) his reactions were slow because he'd been drinking tardaba en reaccionar porque había estado bebiendo
if his reactions are so slow, he shouldn't be in charge of a bus.. the sport requires fast reactions inevitably, our reactions get slower as we get older they tried out a computer game meant to time their reactions
3 (Pol) (pejorative) reacción; (f) the forces of reaction las fuerzas de la reacción; las fuerzas reaccionarias
the defenders of sexual freedom celebrated /their victory against the forces of reaction/ and censorship
4 (Chem) reacción; (f) ozone is produced by the reaction between oxygen and ultra-violet light catalysts are materials which speed up chemical reactions the reaction of ground water with the molten rock
