Di is a concise and modern-sounding name of Latin origin, meaning 'fifth' or 'dedicated to God'. It's often associated with the Roman numeral for five, adding a numerical intrigue to its appeal.
"The name Di was most popular in the late 1950s and early 1960s with five births each in 1946, 1955, 1957, and 1958. It saw another peak in popularity in 1999 with seven births."