HD

High-Definition. Digital TV using the MPEG-2 compression with a resolution of 720 or 1080 lines, interlaced (i) or progressive (p). Also has a wider aspect ratio (1:78:1 or 16:9) than regular TV (1:33:1 or 4:3), and 5.1 channel Dolby Digital AC-3 surround sound.

I'm watching the game in HD.

by Glen Quagmire March 30, 2005

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Abbrevation for Hit Die/Hit Dice used in the Dungeons & Dragons role-playing game.

"You cause 4 + 1d4 HD of creatures to fall into a comatose slumber, beginning with those with the fewest HD. Creatures with 5 or more HD are unaffected."
(Quote from the description of the Sleep spell in the Dungeons & Dragons based computer game Neverwinter Nights 2.)

by Chronomaly July 13, 2008

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"hd" is a verb that describes when a person is sexually aroused. Being "hd" originated from the word "horndog" and was later used as a substitute for the words horny or being turned on.

Boy: "I want to grab your neck from behind, suck it with little nibbles of bites to get you moaning my name. I want to spread my wet kisses all over your tights and make you drag my head such that I am kissing your pussy all over. I want you to moan in ecstasy as I try the crazy new things I have learned!"

Girl: "Holy shit! You just made me so hd!"

by wetboy3000 January 4, 2019

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Nickname for Horny Douche. Usually given to someone who's a bastard and is incredibly stupid. A pervert and only dates to get action. Never MEET one let alone date one.

Girl 1: dude you guys should totally go out
Girl 2: EWWW, He's a HD
Guy 1: No i'm not. *pokes girl 2 in chest*

by bob_or_am_I March 19, 2010

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