fresnel-lantern
Fres`nel" lamp", Fres`nel" lan"tern. Etym: [From Fresnel the inventor, a French physicist.] Defn: A lantern having a lamp surrounded by a hollow cylindrical Fresnel lens.
Fres`nel" lamp", Fres`nel" lan"tern. Etym: [From Fresnel the inventor, a French physicist.] Defn: A lantern having a lamp surrounded by a hollow cylindrical Fresnel lens.