Definition of relucency in US English:

relucency

noun

  • Ophthalmology. The property of the cornea, lens, or other transparent part of the eye of shining in response to illumination by a beam of light, arising from partial reflection and scattering of the light.

Origin

Early 17th century (in an earlier sense). From relucent: see -ency.

Pronunciation

relucency

/riːˈluːsnsi/