What is 'Xu significa' when translated from Italian to English?

"Xu stands for..." is an English equivalent of the incomplete italian phrase Xu significa... .

Specifically, the word Xu is a Chinese loan word that means "abstract, empty, formless, insubstantial." The verb significa means "(He/she/it) does mean/signify/stand for, is meaning/signifying/standing for, means/signifies/stands for." The pronunciation is "ksoo SEEG-nee-FEE-kah."