二倍 にばい Also written 2倍 Meanings Noun, の-adjective double; twice (as much); twofold Kanji 二 two. Read as ニ. 倍 double. Read as バイ. Common phrases 二倍になる Words containing 二倍 二倍体 (にばいたい) diploid 二倍性 (にばいせい) diploidy Jinuma: Japanese Dictionary · Word lists