こうじつせい 向日性 LinksSentence search for 向日性Sentence search for こうじつせいSentence search for こうにちせいKanji details for 向, 日 and 性Edit in JMdict Noun, Noun which may take the genitive case particle 'no'1. heliotropism; actinotropism; disposition (in flowers) to turn toward the sun; phototropismSee also 背日性Other forms向日性 【こうにちせい】 Discussions Log in to talk about this word.