responsiveness

[ri-spon-siv-nis]
noun
  1. the quality or state of being responsive.
  2. Machinery. 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·ty [ri-spon-siv-i-tee, ree-spon-] /rɪ spɒnˈsɪv ɪ ti, ˌri spɒn-/.

Origin of responsiveness

First recorded in 1840–50; responsive + -ness
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018