reactive

play
adjective re·ac·tive \rē-ˈak-tiv\

Definition of reactive

  1. 1 :  of, relating to, or marked by reaction or reactance

  2. 2a :  readily responsive to a stimulusb :  occurring as a result of stress or emotional upset reactive depression

reactively

adverb

reactiveness

noun

reactivity

play \(ˌ)rē-ˌak-ˈti-və-tē\ noun

Examples of reactive in a Sentence

  1. The government's response to the problem was reactive rather than proactive.

Recent Examples of reactive from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reactive.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of reactive

1717

Other Chemical Engineering Terms


REACTIVE Defined for English Language Learners

reactive

play
adjective

Definition of reactive for English Language Learners

  • : done in response to a problem or situation : reacting to problems when they occur instead of doing something to prevent them

  • chemistry : tending to change into something else when mixed with another substance


Medical Dictionary

reactive

play
adjective re·ac·tive \rē-ˈak-tiv\

Medical Definition of reactive

  1. 1a:  of, relating to, or marked by reaction reactive symptoms a reactive processb:  capable of reacting chemically highly reactive materials

  2. 2a:  readily responsive to a stimulus the skin of the geriatric is less reactive than that of younger persons—Louis Tuftb:  occurring as a result of stress or emotional upset especially from factors outside the organism reactive depression


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