【医】 endoscope
inner; inside; within
【医】 end-; endo-; ento-; in-; intra-
antrum; cavity
【医】 cava; cavern; caverna; cavitas; cavitat; cavity; cavum; celio-; chamber
coel-; coelio-; lumen; lumina; space; spatia; spatium
lens; looking glass; mirror
【化】 mirror
【医】 mirror; slass