"Variant of Josephine"
The name Jo is commonly a unisex name from the "Hebrew" origin.
Jo is an English short form of names beginning with Jo-, chiefly Josephine, Joanna and Joan. It is formed by clipping the full name rather than by having a root of its own, so its sense follows whichever full name it shortens. In United States birth records it appears as a given name in its own right from 1881.
Josephine means "God will increase, God had added a child. A feminine form of Joseph".
The pronunciation of Jo is JO.
