Thomasine name popularity, meaning and origin Name Popularity: 0% Thomasine name meaning: Origin: Aramaic Feminine form of Thomas: Twin. Related names Thomas , Tamsin , Tavish, Thom, Thomasin, Thomasine, Tom , Toman, Tomas , Tomasina, Tomik, Tommaso , Tommie , Tommy , Tuomas Other girls names beginning with T Statistics This name does not feature in the UK baby names statistics - so feel free to go ahead and start a trend!