The green coloring matter of plants; also, the substance within the mass of protoplasm which is colored by this matter.(noun)
The Century Dictionary (Public Domain)
Use "chlorophyl" in a sentence
"This coloring matter is called chlorophyl or leaf green."
"Because a peculiar chemical substance called chlorophyl, formed within their cells, absorbs all other rays of light, reflecting only blue and yellow -- which mixture produces the different green tints."
"Thus, then, the coloring matter described as chlorophyl by Lankester has really been mainly derived from that of the endodermal algæ of the variety _plumosa_, which predominates at Naples; while the anthea-green of Krukenberg must mainly consist of the green pigment of the ectoderm, since the Trieste variety evidently does not contain algæ in any great quantity."