sylvanshine

== English == === Etymology === From sylvan +‎ shine, coined by in 1994 by Professor Alistair Fraser of Pennsylvania State University. === Pronunciation === IPA(key): /ˈsɪl.vənˌʃeɪn/ === Noun === sylvanshine (uncountable) (rare) An optical phenomenon in which dew-covered waxy-leaved trees retroreflect beams of light, as from a vehicle's headlights.