See also: siać and siąc English Proper noun SIAC (UK) Initialism of Special Immigration Appeals Commission. Anagrams ICAs, CAIs, ICAS, Saci, CIAs, Sica, ACIs, CISA, ACSI, asci, CAIS, ASIC, IACs, saic, SAIC, sicaWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads