n 1  :  the green photosynthetic coloring matter of plants found in chloroplasts and made up chiefly of a blue-black ester C₅₅H₇₂MgN₄O₅ and a dark green ester C₅₅H₇₀MgN₄O₆ - called also respectively chlorophyll a , chlorophyll b   2  :  a waxy green chlorophyll-containing substance extracted from green plants and used as a coloring agent or deodorant chlo*ro*phyl*lous also  chlo*ro*phyl*lose  adj 
 
    
 
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