Hit
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The term hit can refer to any of the following:
- in marketing, a success involving (sudden) popularity of and demand for a particular item, such as a song that reaches the hit parade
- in archery and in target shooting, striking the exact desired spot, commonly the center of a target
- in recreational drug use, a single dose of a drug
- in baseball, the act of safely reaching first base after batting the ball into fair territory; see hit (baseball)
- a slang term for an assassination by an organized crime syndicate; see hitman
- in computer searches (e.g. using a search engine), an item found to match the specified search conditions
- in music, any song that makes the top 40 of the charts
- in genetic programming and other computer science optimisation techniques, a program scores a hit when its output is sufficiently close or equal to the target value for a particular test input; in some problems a program's fitness may be given by the number of hits it collects when run on the entire test set
As an acronym, HIT can mean:
- Hibernation Inducement Trigger, a chemical with potentially wide applications in organ transplantation and space travel
- Harbin Institute of Technology, one of the premier research universities in China
- in medicine, HIT denotes heparin-induced thrombocytopenia