n. (pl.-iums, -ia) material removed from soil layer by rainwater and deposited in lower layer. illuvial, a.illuviate, v.i. undergo illuviation. illuviation, n. accumulation of illuvium.
Red, white, and blue are the pan-Slav colours. The small shields represent Croatia Ancient, Dubrovnik, Dalmatia, Istria, and Slavonia. The flag is based on the tricolour used during World War II. Effective date: 22 December 1990.