title: HCL
text: # HCL
  
  HCL may refer to:
  
  ## Science and medicine
  
  * Hairy cell leukemia, an uncommon and slowly progressing B cell leukemia
  * Harvard Cyclotron Laboratory, from 1961 to 2002, a proton accelerator used for research and development
  * Hollow-cathode lamp, a spectral line source used in physics and chemistry
  * Hydrochloric acid, a solution of hydrogen chloride in water
  * Hydrochloride, the salt of hydrochloric acid and an organic base
  * Hydrogen chloride, chemical formula HCl
  * Hypomania Checklist, a questionnaire used to screen for hypomania and bipolar spectrum disorders
  * HCL color space, a color space model designed to accord with human perception of color
  
  ## Computing
  
  * Hardware compatibility list
  * HashiCorp Configuration Language, a configuration language authored by HashiCorp, used by cloud infrastructure automation tools, such as Terraform.
  
  ## Organizations
  
  * HCLTech, an IT outsourcing firm based in Noida, India
  
     * HCL Axon, a subsidiary of HCL Technologies
  * Hennepin County Library
  * Hindustan Cables Limited, an Indian cable manufacturer
  * Harvard College Library
  * HC Lugano, a Swiss professional ice hockey team based in Lugano
  * Honolulu Control Facility, an air traffic control facility
  * Horizon Coach Lines, an American bus company
  