Definition of chlorophyll
1 : the green photosynthetic pigment found chiefly in the chloroplasts of plants and occurring especially as a blue-black ester C55H72MgN4O5 or 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
chlorophyllousplay \ˌklȯr-ə-ˈfi-ləs\ adjective
Recent Examples of chlorophyll from the Web
Lasers from a NASA P-3 Orion airborne optical lab zapped the waters from above, scanning for new chlorophyll.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'chlorophyll'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of chlorophyll
French chlorophylle, from chlor- + Greek phyllon leaf — more at blade
First Known Use: 1819
CHLOROPHYLL Defined for English Language Learners
Definition of chlorophyll for English Language Learners
: the green substance in plants that makes it possible for them to make food from carbon dioxide and water
CHLOROPHYLL Defined for Kids
Definition of chlorophyll for Students
: the green coloring matter found mainly in the chloroplasts of plants that absorbs energy from sunlight to produce carbohydrates from carbon dioxide and water during photosynthesis
Medical 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
Seen and Heard
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