chlorophyll

chlo·ro·phyll

noun \ˈklōr-ə-ˌfil, ˈklȯr-, -fəl\

Definition of CHLOROPHYLL

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 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 \ˌklōr-ə-ˈfil-əs, ˌklȯr-\ also chlo·ro·phyl·lose \-ˈfil-ˌōs, -(ˌ)fil-ˈ\ adjective