AmphitritefGreek Mythology Possibly means "the surrounding sea" or "the surrounding third", from Greek ἀμφίς (amphis) meaning "surrounding, around, between" and the same root found in the name of Triton. In Greek mythology she was a goddess of the sea and salt water, the wife of Poseidon and the mother of Triton.
FereydounmPersian, Persian Mythology Modern Persian form of Old Iranian *Thraitauna meaning "the third". In the 10th-century Persian epic the Shahnameh this is the name of a virtuous king who ruled for 500 years. The Avestan form of the name 𐬚𐬭𐬀𐬉𐬙𐬀𐬊𐬥𐬀 (Thraētaona) appears in the earlier texts of the Avesta.
TerceromSpanish (Rare) Means "third" in Spanish. This name was traditionally given to the third child born.
TertiusmAncient Roman, Biblical Latin, Biblical This was both a Roman praenomen and a cognomen meaning "third" in Latin. It is mentioned in Paul's epistle to the Romans in the New Testament as the name of the person who wrote the letter (while Paul dictated it).
Trim & fIndonesian Means "three, third" in Indonesian, ultimately from Sanskrit त्रि (tri).