"Form of Destiny"
The name Deztiny is commonly a female name from the "French" origin.
Deztiny is a respelling of Destiny, an English word name, with z in place of the first s. The substitution does not change the pronunciation, and the name carries the same sense as the common noun, which comes from Latin destinata, the feminine past participle of destinare, to determine or destine.
Destiny means "One's fate".
The pronunciation of Deztiny is DEZ-tuh-nee.