chlo·ro·phyll
noun/ˈklɒrəfɪl/
/ˈklɔːrəfɪl/
[uncountable]- the green substance in plants that takes in light from the sun to help them grow
叶绿素 Word Originearly 19th cent.: coined in French from Greek khlōros ‘green’ + phullon ‘leaf’.