1. allergic reaction hypersensitivity reaction to a particular allergen
  2. exoergic reaction a nuclear reaction accompanied by the evolution of energy
  3. endoergic reaction a nuclear reaction occurring with absorption of energy
  4. allergic rhinitis rhinitis caused by an allergic reaction
  5. type I allergic reaction an allergic reaction that becomes apparent in a sensitized person only minutes after contact
  6. altercation a noisy quarrel
  7. type IV allergic reaction an allergic reaction that becomes apparent only hours after contact
  8. electrocution execution by electricity
  9. Wasserman reaction a blood test to detect syphilis
  10. learned reaction a reaction that has been acquired by learning
  11. exothermic reaction a chemical reaction accompanied by the evolution of heat
  12. aldol reaction a reaction of aldehydes resulting in an aldol
  13. electrocutioner an executioner who uses electricity to kill the condemned person
  14. endothermic reaction a chemical reaction accompanied by the absorption of heat
  15. quellung reaction the swelling of the capsule surrounding a microorganism after reaction with an antibody; the basis of certain tests for identifying microorganisms
  16. aggregation the act of gathering something together
  17. corrections the social control of offenders through a system of imprisonment and rehabilitation and probation and parole
  18. segregation the act of keeping apart
  19. allegation a formal accusation against somebody
  20. acoustic reactance opposition to the flow of sound through a surface