NTTFreq.FrequencyTop 10,000Meanings1nounNTT; Nippon Telegraph and Telephone Corporationcompany nameThe dominant telecommunications company in Japan; often referred to by its initials.NTTの株かぶ価かが上あがった。NTT's stock price went up.インターネット回かい線せんはNTTと契けい約やくしている。I have a contract with NTT for my internet line.