- The definition of chlorophyll is a green color found in plant cells.
An example of chlorophyll is what makes the leaf on a tree green.
the green pigment found in the chloroplasts of plant cells: it occurs in five forms, esp. (), CHMgNO, and (), CHMgNO: it is essential to the photosynthetic process and is used as a coloring agent, in topical medicines, etc.
Origin of chlorophyllFrench chlorophylle: see chloro- and amp; -phyll
Any of a group of green pigments that absorb light energy used in photosynthesis and that are found in the chloroplasts of plants and other photosynthetic organisms such as cyanobacteria, especially:
a. A waxy blue-black microcrystalline green-plant pigment, C55H72MgN4O5, with a characteristic blue-green alcohol solution. Also called chlorophyll a.
b. A similar green-plant pigment, C55H70MgN4O6, having a brilliant green alcohol solution. Also called chlorophyll b.
(usually uncountable, plural chlorophylls)
From French chlorophylle.