What does Celso mean?
Celso \ce(l)-so\ as a boys' name is of Italian and Latin origin, and the meaning of Celso is "high, lofty". As in "Gloria in Excelsis Deo". Also a part of words for sky, like "ciel" (French) and "coelum" (Latin).
Celso is an uncommon first name for men but a somewhat popular surname for all people (#76465 out of 150436, Top 51%). (2000 U.S. Census)
Charted below is the birth name popularity of Celso for boys. Celso has not been ranked in the list thus far. (Top 1000 Birth Names Statistics, 2014)
A suggested similar baby name is Celio. Like Celso, this name is not frequently used.