What does HD stand for?

The sausages were culturally imported from Germany and popularized in the United States, where they were a working class street food sold at hot dog stands that came to be associated with baseball and America.

Häagen-Dazs ice cream holds the distinction of being one of the few commercial ice cream brands not to use stabilizers such as guar gum, xanthan gum, or carrageenan.

Episode 7, "Hammer Down", was the second part of a three-part crossover with CSI: Miami and CSI: Crime Scene Investigation called CSI: Trilogy.

The story takes place during World War II in which Donald Duck and his nephews, Huey, Dewey, and Louie, are serving as civilian aircraft spotters on the western coast of the United States.

Among their other innovations was a photographic exposure estimation device known as an actinograph.

Introduced by IBM in 1956, HDDs became the dominant secondary storage device for general-purpose computers by the early 1960s.

Hirschsprung's disease occurs in about one in 5,000 of live births.

The addition of noise or other outside signals (hum, interference) is not deemed distortion, though the effects of quantization distortion are sometimes deemed noise.

"Health department" can also refer to a university health department.

In monogamous cultures, a man is expected not to have more than one wife at the same time, and a woman is expected not to have more than one husband.

Mustard agents are regulated under the 1993 Chemical Weapons Convention (CWC).