high definition TV
A television system that has more lines per picture than present systems and thus produces much sharper images. American TV has 525 scanning lines and European TV 625, whereas high definition systems may have more than 1,000.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.