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Stands for "High Definition." HD describes any video with a resolution greater than standard definition (SD) video. While "high-definition" has a broad scope, it can also refer to a specific HD resolution, such as 1920x1080 pixels .
Before HDTV was introduced in the late 1990s, the most common video resolutions were 640x480 (NTSC) and 720x576 (PAL and SECAM). The NTSC (National Television Standards Committee) format was standard in the U.S. and Japan, while Europe and other parts of the world used PAL (Phase Alternating Line) or SECAM (Sequential Color and Memory). These resolutions became known as "standard definition" (SD) only after "high definition" (HD) was introduced.
When HD devices first hit the market, there were three standard versions:
- 720p - 1280x720 progressive scan
- 1080i - 1920x1080 interlaced
- 1080p - 1920x1080 progressive scan
720p, also called "HD ready," was the standard DVD video format, while 1080i and 1080p, called "Full HD," were most often used HD broadcasts. Since early HD televisions only supported 1080i, the standard HD broadcast format was 1080i. It was not until Blu-ray discs became available that 1080p became standard.
Since "HD" refers to any resolution greater than standard definition, it also encompasses higher resolutions like 4K and 8K. However, to avoid ambiguity, 4K resolution (3840x2160) is typically called Ultra HD or UHD, while HD most often describes 1920x1080 video.
Tech Factor
Related terms.
- Progressive Scan
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| Acronym | Definition |
|---|---|
| HD | High Definition |
| HD | Hard Drive |
| HD | Harley-Davidson |
| HD | Heavy Duty |
| HD | High Density |
| HD | Human Developement |
| HD | Hard Disk |
| HD | Home Depot, Inc. |
| HD | Head |
| HD | Hybrid Digital |
| HD | Hold |
| HD | Hyundai |
| HD | Honda |
| HD | Happy Days |
| HD | Henry Draper |
| HD | Hilary Duff |
| HD | Hundred |
| HD | Huntington's Disease |
| HD | Hot Dog |
| HD | Heidelberg |
| HD | Home Decor |
| HD | Help Desk |
| HD | Home Defense |
| HD | Heart Disease |
| HD | Home Delivery |
| HD | Harmonic Distortion |
| HD | Högsta Domstolen |
| HD | Higher Diploma |
| HD | Half Day |
| HD | Half-Duplex |
| HD | Historic District |
| HD | Hairdresser |
| HD | Hot Date |
| HD | Huddersfield |
| HD | High Distortion |
| HD | Homeland Defense |
| HD | Hemodialysis |
| HD | Hazardous Drug |
| HD | Hodgkin's Disease |
| HD | Helper-Dependent |
| HD | Hip Dysplasia |
| HD | Hydrodynamic |
| HD | Mustard Gas |
| HD | Hemorrhagic Disease |
| HD | Helsingborgs Dagblad |
| HD | High Dive |
| HD | Hit Dice |
| HD | Hall Director |
| HD | Health Division |
| HD | Hand Dryer |
| HD | Honorary Degree |
| HD | Hemodynamically |
| HD | Honorable Discharge |
| HD | Highway Department |
| HD | Hoe Down |
| HD | High Distinction |
| HD | Hyperactive Disorder |
| HD | Housing Department |
| HD | Horizontal Distance |
| HD | High Dispersion |
| HD | Hazel Dell |
| HD | Human Dimension |
| HD | Helm's Deep |
| HD | Heaven's Disciples |
| HD | House Document |
| HD | Humanitarian Demining |
| HD | Hüsker Dü |
| HD | Heat Detector |
| HD | Homeopathic Doctor |
| HD | Hydatid Disease |
| HD | Hot Desk |
| HD | Harbor Defense |
| HD | Highly Dispersed |
| HD | High-Drag |
| HD | Heavy Drop |
| HD | Hidden Desire |
| HD | Hip-Disarticulation |
| HD | Hurricane Days |
| HD | Harmonization Document |
| HD | Hexanedione |
| HD | Heavy Defense |
| HD | Hardware Disease |
| HD | Hrvatski Dragovoljac |
| HD | Helicopter Director |
| HD | Humidity Detector |
| HD | Hepatosis Dietetica |
| HD | Heloma Durum |
| HD | Heavy Decoy |
| HD | Horizontal Decelerator |
| HD | Household Drivers |
| HD | Half Sized Diazo Non-Reproducible Drawing |
| HD | Hydraulic Fluid, Diving |
- HCYAWJWDIYDKWHD
- HD activity camera
- HD analog formats
- HD audio sources
- HD Built In
- HD camcorder
- HD controller
- HD digital formats
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Home Depot (NYSE:HD) sheds 4.9% this week, as yearly returns fall more in line with earnings growth. When we invest, we're generally looking for stocks that outperform the market average.
HD Supply Facilities Maintenance supplies maintenance, repair & operations products to multifamily, hospitality, healthcare, commercial & government facilities.
1. The customer (“Purchaser”) must purchase a new or used model year 2013 or newer Harley-Davidson Sportster motorcycle available and in stock a participating U.S. H-D dealer ("Eligible Motorcycle") between February 1, …
abbreviation for high-definition: used to describe a system for showing very clear pictures on a television or computer screen or for producing very clear sound: The series was shot …
Find free HD wallpapers for your desktop, Mac, Windows or Android device. We have a lot of different topics like nature, abstract and a lot more. · Pexels
Get the latest Home Depot Inc (HD) real-time quote, historical performance, charts, and other financial information to help you make more informed trading and investment decisions.
HD describes any video with a resolution greater than standard definition (SD) video. While "high-definition" has a broad scope, it can also refer to a specific HD resolution, such as 1920x1080 pixels. Before HDTV was introduced in the late 1990s, the most common video resolutions were 640x480 (NTSC) and 720x576 (PAL and SECAM). The NTSC (National …
HD | Complete Home Depot Inc. stock news by MarketWatch. View real-time stock prices and stock quotes for a full financial overview.
Home Depot Inc (NYSE:HD) Home Depot Inc. Real-Time Quotes. 316.37. BATS BZX Real-Time Price. As of 11:20am ET. +0.91 / +0.29%. Today’s Change. 264.51.
HD: High Definition: HD: Hard Drive: HD: Harley-Davidson: HD: Heavy Duty: HD: High Density: HD: Human Developement (course of study) HD: Hard Disk: HD: Home Depot, Inc. (NYSE symbol) HD: Head: HD: Hybrid Digital (radio technology) HD: Hold: HD: Hyundai: HD: Honda: HD: Happy Days (TV show) HD: Henry Draper (star catalog) HD: Hilary Duff: …