[ hahy-def-uh-nish-uh n ]
/ ˈhaɪˌdɛf əˈnɪʃ ən /
a television system having twice the standard number of scanning lines per frame and producing a sharper image, and greater picture detail. Abbreviation: HDTV
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Origin of high-definition television
First recorded in 1980–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for high definition television
high definition television
a television system offering a picture with superior definition, using 1000 or more scanning lines, and possibly a higher field repetition rate to reduce flicker effectsAbbreviation: HDTV
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012