from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The launching of vehicles into outer space.
- adj. Engaged in the launching of vehicles into outer space: "efforts in planetary exploration . . . achieved in cooperation with other spacefaring nations” ( Chet Raymo).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Engaged in the building and launching of vehicles into space.
- n. spaceflight
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a voyage outside the Earth's atmosphere
By analogy with seafaring (Wiktionary)