Definition of "chlorophyll" [chlo•ro•phyll]

• Any of a group of green pigments that are found in the chloroplasts of plants and in other photosynthetic organisms such as cyanobacteria, especially: (noun)
• A waxy blue-black microcrystalline green-plant pigment, C55H72MgN4O5, with a characteristic blue-green alcohol solution. Also called chlorophyll a. (noun)
• A similar green-plant pigment, C55H70MgN4O6, having a brilliant green alcohol solution. Also called chlorophyll b. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The Greek chloros, from which the word chlorophyll is said to be derived, is also a distant cousin."
• "Looks like the "middle ground" is where the quantum mystics hang out and propose unnecessary quantum explanations for well-understood chemical mutation processes based on an extremely vague analogy between photon capture in chlorophyll and base pair mutations in DNA."
• "And the darker leaves on plants are good for you, she explains, because they contain "chlorophyll - the 'blood' of the plant - which will really oxygenate your blood."'"