penetration of light, radiation, liquid, etc.

to penetrate

(ophthalmology) Alternative form of 硝子体

glass (substance)

ガラス体: vitreous body

high, tall / superior / 高価い: expensive

a light, beam, illumination / a gleam, glow, ray / a glimmer, shine, sparkle / a luster/lustre, polish, sheen / glory, influence, power / a glimmer, gleam / positive aspect

rate, ratio

(Internet slang, dated) Windows (an operating system)

window / (regional, dialect, Etchū region) a deep gap in a mountain ridge (so called for the way the wind blows through, like a window)