HCI

HCI has different meanings depending on the context:

• HCI is a typographical error for HCl (HCℓ), see hydrogen chloride and hydrochloric acid.
• Handgun Control Incorporated, the former name of the Brady Campaign to Prevent Gun Violence, a gun control advocacy group
• Home Computer Initiative, a UK Government programme designed to increase home computing.
• Human-computer interaction, the study of the interaction between people and computers.
• Hwa Chong Institution, a school located in Singapore.