Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Tending to be responsive or to react to a stimulus.
  • adj. Characterized by reaction.
  • adj. Chemistry & Physics Tending to participate readily in reactions.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. that reacts or responds to a stimulus
  • adj. that readily takes part in reactions
  • adj. Characterized by induction or capacitance rather than resistance.
  • adj. Reacting to the past rather than anticipating the future, not predictive.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having power to react; tending to reaction; of the nature of reaction.

from The Century Dictionary and Cyclopedia

  • Pertaining to or causing reaction; acting reflexively or reciprocally; resulting from reflex action.
  • In alternating-current circuits, same as wattless.
  • n. A reagent.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. reacting to a stimulus
  • adj. participating readily in reactions

Etymologies

Sorry, no etymologies found.

Examples

  • The author then enters into a discussion of the use of the term reactive tendency, and explains that this term, according to his definition, is meant to explain something more specific than an inclination to direct activity toward one of a limited number of general ends, and to include both the innate and the acquired features of an individual's reactive mechanism.

    The Journal of Abnormal Psychology

  • Georgia suffered from troubled breathing when she had a cold or a cough, and had been in the ER twice for what they call reactive airway disease -- or heavy wheezing due to constricted airways.

    Safe? Sound? A Parent's Nightmare

  • In a posting on its website over the weekend, the hospital said the mistake occurred because a transplant staffer believed that the English word "reactive" on the donor's standard HIV test meant negative instead of positive.

    The Seattle Times

  • In a posting on its website over the weekend, the hospital said the mistake occurred because a transplant staffer believed he heard the English word "non-reactive" on the donor's standard HIV test, which means negative, while the word "reactive" was actually given.

    SFGate: Top News Stories

  • NTUH, one of Taiwan's best medical institutions, said a staffer misheard the donor's test results as "non-reactive" when the English word "reactive" was actually given, meaning the donor had HIV.

    CBC | Top Stories News

  • The hospital, one of Taiwan's best, said a staffer misheard the donor's test results as "non-reactive" when the English word "reactive" was actually given, indicating that the donor had HIV.

    The Seattle Times

  • The hospital said on its website over the weekend the mistake occurred because a transplant staffer believed he heard the English word "non-reactive" on the donor's standard HIV test, while the word "reactive" was actually given.

    The Seattle Times

  • The second way of thinking about life and how to approach it might be called the "reactive life."

    Kathleen Gurney: How Are You Planning to Approach 2012? Are You a Resolver or Do You Have an Alternate Plan?

  • Ultimately, Scholes argued that the cost of being reactive is gigantic.

    Flexibility, Please : Law is Cool

  • Being ‘sensitive’, very gentle and reactive, is I guess a nice thing in many ways, and anyway we can really not do anything about our individual temperaments except accept them.

    Suffering and Enlightenment « Tales from the Reading Room

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