adj.
Pronunciation: r ē - ' ak-tiv
Function: adjective
Date: 1794
1 : of, relating to, or marked by reaction or reactance
2 a : readily responsive to a stimulus b : occurring as a result of stress or emotional upset < reactive depression>
– re · ac · tive · ly adverb
– re · ac · tive · ness noun
– re · ac · tiv · i · ty \ ( ˌ )r ē - ˌ ak- ' ti-v ə -t ē \ noun