قِلْو (qilw, “base, alkali”) + ـِيّ (-iyy). Apparently the second vocalization is a phono-semantic matching of English alkali and the terms in other languages having the segment /kal/, like German alkalisch where the segment bears the stress.
Esercitati a parlare e a memorizzare " قلوي " e molte altre parole e frasi in Arabic .