グリニッジ平均時 グリニッジへいきんじ Meanings Noun Greenwich Mean Time; GMT See also: グリニッジ標準時 (グリニッジひょうじゅんじ). Kanji 平 flat. Read as ヘイ. 均 average. Read as キン. 時 time. Read as ジ. Jinuma: Japanese Dictionary · Word lists