Meaning & History
This name is made up of 哲 (Testu) meaning "Philosophy, Clear", 鉄 (Tetsu) meaning "Iron", or 達 (Tetsu) meaning "Reach, Arrive, Accomplished, Attain" or 徹 (Tetsu) meaning "Sit up all night, Penetrate, Pierce, Strike Home", and 二 (Ji) meaning "Two", 治 (Ji) meaning "Govern, Rule", or 次 (Ji) meaning "Next, Second". My source is in the notes.