ˈ ̷ ̷| ̷ ̷ ̷ ̷ adjective
of a mirror or glass block : having a metallic film backing of such thinness that only half the incident light is reflected with the remainder being transmitted through the backing
ˈ ̷ ̷| ̷ ̷ ̷ ̷ adjective
of a mirror or glass block : having a metallic film backing of such thinness that only half the incident light is reflected with the remainder being transmitted through the backing
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012