n.
The period after 1957, the year in which a spacecraft was first placed in orbit around Earth, marking the beginning of space exploration.
space-age space'-age' (spās'āj') adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
