No independent English meaning found for this name in these sources. Its Arabic spelling matches a real word in the Quran — see the citation below.

Ghadaat is an Arabic name for girls that means to leave between dawn and sunrise, to leave home early, for example for work.

Ghaddaa is an Arabic name for girls that means one who leaves between dawn and sunrise, i.e. one who leaves early, for example for work.

Ghudwah is an Arabic name for girls that means early morning, the time between dawn and sunrise.