Chlorophyll

Chlorophyll, the green colouring matter in plants, especially the leaves; due to the presence and action of light.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Chloroform * Chlorosis
[wait for the fun]
Chittagong
Chittim
Chivalry
Chivalry, Court of
Chladni, Friedrich
Chlopicki, Joseph
Chloral
Chlorine
Chloris
Chloroform
Chlorophyll
Chlorosis
Chocolate
Chocktaws
Choiseul, Duc de
Choisy, Abbé
Cholera Morbus
Cholet
Cholula
Chopin
Chorley