high-definition television

/HH AY1 D EH0 F AH0 N IH0 SH AH0 N T EH0 L AH0 V IH0 ZH AH0 N/
noun
  1. 1

    Any or all of several formats of television system having a higher resolution than traditional ones

  2. 2

    A television set that employs such a system

Source: https://en.wiktionary.org/wiki/high-definition%20television