Save Gender Masculine Usage Japanese Scripts 哲一郎, 徹一郎, 鉄一郎, etc.(Japanese Kanji) Pronounced Pron. TE-TSUU-EE-CHEE-ṘO: [key] Meaning & History From Japanese 哲 (tetsu) meaning "philosophy, clear", 徹 (tetsu) meaning "penetrate" or 鉄 (tetsu) meaning "iron", 一 (ichi) meaning "one" combined with 郎 (rou) meaning "son". Other combinations of kanji characters are also possible.