Pronunciation: (ri-spon'siv-nis),[key] —n. 1. the quality or state of being responsive.
2. Mach.the ability of a machine or system to adjust quickly to suddenly altered external conditions, as of speed, load, or temperature, and to resume stable operation without undue delay. Also,re•spon•siv•i•tyPronunciation: (ri-spon-siv'i-tē, rē"spon-).[key]