- The quality or condition of being sensitive. (noun)
- The capacity of an organ or organism to respond to stimulation. (noun)
- Electronics The degree of response of a receiver or instrument to an incoming signal or to a change in the incoming signal; the signal strength required by an FM tuner to reduce noise and distortion. (noun)
- The degree of response of a plate or film to light, especially to light of a specified wavelength. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.