noun
Nippon Telegraph and Telephone Public Corporation (defunct)
Historical organization name; the predecessor of NTT. Used in contexts about pre-privatization telecommunications in Japan.
日本電信電話公社は1985年に民営化され、NTTとなった。
The Nippon Telegraph and Telephone Public Corporation was privatized in 1985 and became NTT.
NTT is the privatized successor company; 日本電信電話公社 refers specifically to the pre-1985 public corporation.
Compound of 日本 (Nippon, Japan), 電信 (telegraph), 電話 (telephone), and 公社 (public corporation). The name reflects its role as the state-owned telecommunications provider.