television

• tel‧e‧vi‧sion
• 1 [countable] also television set formal a piece of electronic equipment shaped like a box with a screen, on which you can watch programmes[= TV]:
• a widescreen television
• turn/switch a television on/off
• Lucy turned on the television to watch the evening news.
• turn the television up/down (=make it louder or quieter)
• 2 [uncountable] the programmes broadcast in this way [= TV]:
• In the evenings I like to relax and watch television.
• television programme/show/series etc
• a television documentary about runaway children
• 3

   on (the) television

  broadcast or being broadcast on television:
• What's on television tonight?
• 4 [uncountable] the business of making and broadcasting programmes on television [= TV]
• in television
• Jean works in television.
• television producer/reporter/presenter etc
• a television film crew
• satellite/cable television

WORD FOCUS: television 
similar words: TV, telly BrE informal, the box BrE informal, the tubeAmE informal
programmes on television: the news, soap opera, sitcom, drama series, detective series, documentary, docusoap, game show, talk show also chat show British English, made-for-TV movie, cartoon,reality TV, infomercial
a TV programme shown on the Internet: webcast
a company that broadcasts programmes: channel, station
types of television broadcasts: terrestrial British English, cable,satellite, digital, pay-per-viewtelevision➔ channel surfing

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.