日にっ鉄てつMeanings1nounNippon Steel (abbreviation)company nameAbbreviation of 日本製鉄 (Nippon Steel Corporation). Used in business and news contexts.日にっ鉄てつは今こん年ねん度どの業ぎょう績せき見み通とおしを上じょう方ほう修しゅう正せいした。Nippon Steel revised its earnings forecast upward for this fiscal year.