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Title: Hr  
Author: World Heritage Encyclopedia
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Subject: List of two-letter combinations, 10COLOR'S, Himesh Reshammiya, Auto-categorization/letters, Links to disambiguating pages (H)
Publisher: World Heritage Encyclopedia


HR, Hr or hr may refer to:


  • Science, technology and engineering 1
  • Government and politics 2
  • People 3
  • Arts and entertainment 4
  • Business and finance 5
  • Transportation 6
  • Other uses 7
  • See also 8

Science, technology and engineering

  • HR (gene) (Hairless homolog (mouse)), a gene which encodes a protein whose function has been linked to hair growth
  • HR (software), a program that automatically forms mathematical theories by searching for sequences of numbers
  • Haemodynamic response, rapid delivery of blood to active neuronal tissues
  • Half Rate (HR or GSM-HR), a speech coding system for GSM developed in the early 1990s
  • Hazard ratio, the effect of an explanatory variable on the hazard or risk of an event
  • Heart rate (HR), a measure of the number of heart beats per minute (bpm)
  • Hertzsprung–Russell diagram (H-R diagram or HRD, also known as a colour-magnitude diagram or CMD), used in understanding stellar evolution in astronomy and astrophysics
  • High-Resolution High-Definition (HRHD, HR, HRHDTV or HR.HDTV), referring to an image resolution derived from high-definition video
  • Homologous recombination, in genetics, the process in which genetic material is exchanged between two similar or identical strands of DNA
  • Hypersensitive response, a mechanism used by plants to prevent the spread of infection by microbial pathogens
  • Hydroxyethylrutoside, a class of drugs
  • Hayati-Roberts link frame convention (HR), a robotics convention for representation of coordinates

  • , an HTML element that creates a 'horizontal rule' or dividing line
  • Abbreviation for hour
  • Star catalogue symbol standing for Harvard observatory, Revised photometry

Government and politics


  • H.R. (b. 1956), lead singer of Bad Brains
  • Harley Race (b. 1943), retired pro wrestler, current promoter
  • Harold Reynolds (b. 1960), former major league baseball player, current commentator
  • Henry Rollins (b. 1961), American singer-songwriter, spoken word artist, actor, activist and publisher
  • Himesh Reshammiya (b. 1973), Indian composer, singer and actor
  • Hrithik Roshan (b. 1974), Indian actor

Arts and entertainment

Business and finance


  • Heritage railway, a term used for a railway which is run as a tourist attraction
  • Highland Railway, one of the smaller British railways before the Railways Act of 1921
  • 'HR', IATA airline designator for Hahn Air
  • 'HR', 1960s car model of Australian automaker Holden

Other uses

  • 'HR', abbreviation of 'human remains', a term used by entities such as funeral homes
  • Hessischer Rundfunk (Hessian Broadcasting) (HR), public broadcaster for the German state (Bundesland) of Hessen
  • Hispanic Review, an academic journal published by the University of Pennsylvania Press
  • Home run, in the sport of baseball
  • Human Rights, "Rights" and "Freedoms" to which all humans are entitled
  • hr, a two-letter combination used in some languages

See also

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