All upper atmosphere synonyms
up·per at·mos·phere
U u noun upper atmosphere
- empyrean — Belonging to or deriving from heaven.
- celestial sphere — an imaginary sphere of infinitely large radius enclosing the universe so that all celestial bodies appear to be projected onto its surface
- aerospace — Aerospace companies are involved in developing and making rockets, missiles, space vehicles, and related equipment.
- azure — Azure is used to describe things that are bright blue.