Definition for reactive - Oxford Dictionaries Online (World English)

Subscriber login

Close menu

	Email Cite
	reactive (re\|act¦ive) Pronunciation: /rɪˈaktɪv/ adjective 1showing a response to a stimulus: pupils are reactive to light Physiology showing an immune response to a specific antigen: lysosomal activity can activate B lymphocytes reactive against self-components (of a disease or illness) caused by a reaction to something: reactive arthritis reactive depression having a tendency to react chemically: nitrogen dioxide is a highly reactive gas 2acting in response to a situation rather than creating or controlling it: a proactive rather than a reactive approach 3 Physics relating to reactance: a reactive load		Search results in the dictionary reactive inhibition More results » Nearby Words reacquire react reactance reactant reaction reaction formation reaction shot reactionary reactivate reactive reactive inhibition reactivity reactor read read-in read-only memory read-out read-through read-write