sensitivity

noun

1. 1

   The quality or state of being sensitive; sensitiveness.

2. 2

   The ability of an organism or organ to respond to external stimuli.

3. 3

   The proportion of individuals in a population that will be correctly identified in a binary classification test.

4. 4

   The degree of response of an instrument to a change in an input signal.

5. 5

   The degree of response of a film etc. to light of a specified wavelength.