the atmosphere and outer space considered as a whole
"The aerospace industry designs vehicles capable of operating within both the atmosphere and outer space considered as a whole."
The atmosphere of the Earth and the region of space around it.
"The aerospace industry relies on accurate data about the atmosphere of the Earth and the region of space around it to design safe spacecraft."
In plain English: Aerospace is everything related to flying objects and traveling through both air and space.
"The new aerospace company is planning to launch its first satellite next month."
Usage: Use this term as an adjective before nouns like engineering or industry rather than a standalone noun when discussing technology related to flight and space travel. Avoid confusing it with "aeronautics," which specifically refers only to aircraft flying within the atmosphere, whereas aerospace includes both atmospheric flight and outer space activities.
Of, or relating to the Earth's atmosphere and nearby space.
"The aerospace industry focuses on developing technologies that operate within both the Earth's atmosphere and nearby space."
In plain English: Aerospace refers to anything related to both flying within Earth's atmosphere and traveling through outer space.
"The aerospace industry is growing rapidly with new technologies for space travel and advanced aircraft design."
Aerospace is a compound word formed by combining aero- and space. It was first used to describe the combined field of air and outer space travel.