Un nom-phrase signifiant « Dieu a fait des merveilles » (Chukwu, Dieu + emeka, a bien/grandement fait). Couramment abrégé en Emeka.
Source : Igbo sentence-naming tradition, cross-referenced across Wikipedia (Chukwuemeka), FunTimes Magazine "30 Popular Igbo Names In The Diaspora And Their Meanings", and Behind the Name (Igbo names)