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
The plant has gained traction for its richness in micro-nutrients, including chlorophyll and carotenoids, which give it its intense hue.
Since the 1950s the Chesapeake Bay has had a 10-fold increase in chlorophyll, an indicator of phytoplankton growth.
The peels of bananas are bright green in color until the chlorophyll inside the peel begins to break down.
Just as grass and leaves have chlorophyll to give them color, so do fruits.
Green peppers, with more chlorophyll, are less sweet.
Pour in the rainbow food coloring, edible dye and chlorophyll.
Average chlorophyll readings, used to measure the presence of algae, almost tripled.
On Earth, photosynthesis is based on pigments like chlorophyll, which absorbs blue and red light and appears green to human eyes.
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.
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
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