The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A former country of southeast Asia. It existed from 1954, after the fall of the French at Dien Bien Phu, to 1975, when the South Vietnamese government collapsed at the end of the Vietnam War. It is now part of Vietnam.
- South Vietnamese adjective & n.