向日性 こうじつせい Also written こうにちせい Meanings Noun, の-adjective heliotropism; actinotropism; disposition (in flowers) to turn toward the sun; phototropism See also: 背日性 (はいじつせい). Kanji 向 toward. Read as コウ. 日 day. Read as ジツ. 性 nature. Read as セイ. Jinuma: Japanese Dictionary · Word lists