firmament /fûrˈmə-mənt/

1. The solid sphere in which the stars were formerly thought to be fixed
2. The sky

firmamental /-mentˈl/ adjective

• subcellar
• subcellars
• subcellular
• subcentral
• subception
• subchanter
• subchanters
• subchapter
• subchapters
• subcharter
• subcharters
• subchelate
• subchief
• subchiefs
• subchloride
• subchlorides
• subchord
• subchords
• subcircuit
• subcircuits
• subcivilisation
• subcivilised
• subcivilization
• subcivilized
• subclaim