Definition of "ICA"
ICA
proper noun
(computing, business) Initialism of Innovative Communications Alliance, an alliance formed by Microsoft and Nortel to develop unified communications products.
(historical) Initialism of Irish Citizen Army.
(video games) Initialism of International Contract Agency.
noun
plural ICAs
(computer graphics) Initialism of image compression artifact.
(anatomy) Initialism of internal carotid artery.