chlorophyll
chlorophyll
noun
/ˈklɒrəfɪl/
uncountable
the green substance in plants that takes in light from the sun to help them grow
SEE ALSO
photosynthesis
TOPICS Plants and trees
C2
Topics Biology
C2
Word Origin
early 19th cent.: coined in French from Greek khlōros ‘green’ + phullon ‘leaf’.