See also: HCl, hći, hči, and hcí English Noun HCI (countable and uncountable, plural HCIs) (computing) Initialism of human-computer interaction. (computing) Initialism of host-controller interface. (physics, chemistry) Initialism of highly charged ion. Proper noun HCI (UK) Initialism of Home Computer Initiative. Anagrams Ich, IHC, Chi., ICH, Ch'i, chi, ch'i, CIH, Chi, ich, hic, CHIWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads