(organic chemistry) Initialism of hydrochlorofluorocarbon., a class of molecules containing hydrogen, chlorine, fluorine, and carbon atoms

(computing) Initialism of human-computer interaction. / (computing) Initialism of host-controller interface. / (physics, chemistry) Initialism of highly charged ion.

(UK) Initialism of Home Computer Initiative.

plural of HCl scrubber

plural of HCFC

Initialism of human chorionic gonadotropin.

Initialism of Ho Chi Minh City.

plural of HCA

Initialism of home care assistant.

Initialism of hepatitis C virus. / (philately) Initialism of high catalogue value.