n.
Pronunciation: ri- ' flek-t ə n(t)s
Function: noun
Date: 1926
: the fraction of the total radiant flux incident upon a surface that is reflected and that varies according to the wavelength distribution of the incident radiation ― called also re · flec · tiv · i · ty \ ˌ r ē - ˌ flek- ' ti-v ə -t ē , ri- \