Tetra
US Popularity Rank: None
Origin: Greek
Meaning: Four
Tetra is a lovable, geeky little name taking pointers from Petra and chemistry both! In chemistry, "tetra" is used as a prefix to indicate four atoms or groups of atoms. This shorthand comes from the Greek word téttares meaning "four." Taking this definition into account, it's no wonder Tetris was given the name it was.