【医】 midplane
basin; dish; pot; tub
【机】 basin
antrum; cavity
【医】 cava; cavern; caverna; cavitas; cavitat; cavity; cavum; celio-; chamber
coel-; coelio-; lumen; lumina; space; spatia; spatium
【医】 connecting piece; mesomere; middlepiece; midpiece
flat; plane; surface
【医】 flat; plane; planum