肥大成長 ひだいせいちょう Also written 肥大生長 Meanings Noun secondary growth See also: 二次成長 (にじせいちょう). Kanji 肥 fatten. Read as ヒ. 大 big. Read as ダイ. 成 become. Read as セイ. 長 long. Read as チョウ. Jinuma: Japanese Dictionary · Word lists