HD

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HD

A prefix used to designate a star as listed in the Henry Draper Catalog.

HD

On drawings, abbr. for head.

HD

HD

(1) See HD Radio and HD audio.

(2) (High Definition) HD often refers to a high-resolution digital TV (see HDTV). The HD designation is also used with many TV/video formats (see HD analog formats and HD formats).

(3) (Hard Disk, Hard Drive) For example, a 500GB HD is a 500 gigabyte hard disk. FD means floppy disk; now a distant memory. See magnetic disk and floppy disk.

(4) (High Density) Various high-capacity floppy disk formats. For example, the 1.44MB 3.5" HD floppy compared to the earlier DD (double density) 720KB diskette, and the 1.2MB 5.25" HD floppy versus the DD 360KB diskette. See floppy disk.

(5) (High Definition) A screen resolution of 1280 x 720 pixels. HD+ is 1480x720. See DTV, FHD, 720p and screen resolution.


HD and HD+ Screen Resolutions
In the Galaxy S7 smartphone (top) and S8 (bottom), the screen resolution can be reduced to save battery.
References in periodicals archive ?
Within the terminology introduced above, both Dexter and I had, in fact, listed all possible outcomes for three flips of a fair coin; however, I had listed all the possible outcomes as the sample space {HHH, HTT, THT, TTH, HHT, HTH, THH, TTT} and Dexter had listed all the possible outcomes as one sample set {3H, 1H & 2T, 2H & 1T, 3T} (or equivalently {{HHH}, {HTT, THT, TTH}, {HHT, HTH, THH}, {TTT}}).
The HTT checklist is easy to use, efficient, and confined to one page.
In order for successful teamwork to develop between the HTT and the company (including troop and battery commands), the commander needs to understand the capabilities of the HTT and determine how these can benefit his unit.
James Forsythe, a social scientist with the HTT training at the NTC.
Richards said: "We are focusing on developing and marketing HTT to the auto and off-highway sector.
She tells you the polling went well and the HTT was able to determine that future CERP (42) projects given "in the name of the mosque" would be acceptable to the tribal elders because such "gifts" are considered "gifts to God" and would not put the village at risk from the insurgents.
The time of initiation of the 4-d HTT affected endosperm nuclei number significantly, and delayed the occurrence of peak mitotic index.
The HTT worker visited the patient up to thrice daily for up to 6 weeks.
It is unarguable that HTT works for some kinds of training.
The plan for these cities is for HTT to build its version of the Hyperloop, a futuristic and high-speed mode of transportation that propels pod vehicles occupied by people through a vacuum tube.
An HTT female Social Scientist was able to assess women's perspectives resulting in data that provided valuable, operationally relevant information with regard to women's (and entire community) perspectives and needs in the Zangabad area.
Through field research, the HTT was able to support the commander and his staff by identifying developmental, governance, and security issues within the province.