chlorophyll

noun
chlo·​ro·​phyll | \ ˈklȯr-ə-ˌfil How to pronounce chlorophyll (audio) , -fəl\

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 respectively 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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Other Words from chlorophyll

chlorophyllous \ ˌklȯr-​ə-​ˈfi-​ləs How to pronounce chlorophyllous (audio) \ adjective

Examples of chlorophyll in a Sentence

Recent Examples on the Web

Phytoplankton, microscopic algae that contain chlorophyll, require sunlight to grow, like a plant. Jenny Howard, National Geographic, "Dead zones, explained," 31 July 2019 These compounds absorb the sun’s energy and use it to fuel sugar production just as happens in chlorophyll — only with slightly lower efficiency. Paul Cappiello, The Courier-Journal, "Why do some garden leaves turn green, white and yellow? Foliage decoded," 14 June 2019 The chlorophyll that makes plants green is breaking down. Washington Post, "Sprouting onions and scarred tomatoes: How to tell whether fading produce is still safe to eat," 25 July 2019 Risotto prepared with phytoplankton is a deep-green chlorophyll bomb. Dominic Armato, azcentral, "The best restaurants in Scottsdale and Paradise Valley," 1 July 2019 This allows the leaves’ chlorophyll factory to absorb and process solar energy. Bonnie Blodgett, Twin Cities, "I let my plants tell me where they want to live," 29 June 2019 Here is the model: Photons are first absorbed by chlorophyll molecules embedded in protein scaffolds. Peter Byrne, Quanta Magazine, "In Pursuit of Quantum Biology With Birgitta Whaley," 30 July 2013 These result from mutations in certain leaf cells that block the production of chlorophyll or xanthophylls — or both. Paul Cappiello, The Courier-Journal, "Why do some garden leaves turn green, white and yellow? Foliage decoded," 14 June 2019 Fill plastic bottles with seawater to test for chlorophyll. Elizabeth Rush, National Geographic, "Here's what Antarctica's calving glaciers look like up close," 12 Mar. 2019

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.

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First Known Use of chlorophyll

1819, in the meaning defined at sense 1

History and Etymology for chlorophyll

French chlorophylle, from chlor- + Greek phyllon leaf — more at blade

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Statistics for chlorophyll

Last Updated

11 Aug 2019

Look-up Popularity

Time Traveler for chlorophyll

The first known use of chlorophyll was in 1819

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More Definitions for chlorophyll

chlorophyll

noun

English Language Learners Definition of chlorophyll

: the green substance in plants that makes it possible for them to make food from carbon dioxide and water

chlorophyll

noun
chlo·​ro·​phyll | \ ˈklȯr-ə-ˌfil How to pronounce chlorophyll (audio) \

Kids Definition of chlorophyll

: 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

chlorophyll

noun
chlo·​ro·​phyll | \ ˈklōr-ə-ˌfil, ˈklȯr-, -fəl How to pronounce chlorophyll (audio) \

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 respectively chlorophyll a, chlorophyll b

2 : a waxy green chlorophyll-containing substance extracted from green plants and used as a coloring agent or deodorant

Other Words from chlorophyll

chlorophyllous \ ˌklōr-​ə-​ˈfil-​əs, ˌklȯr-​ How to pronounce chlorophyllous (audio) \ also chlorophyllose \ -​ˈfil-​ˌōs, -​(ˌ)fil-​ˈ How to pronounce chlorophyllose (audio) \ adjective

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More from Merriam-Webster on chlorophyll

Rhyming Dictionary: Words that rhyme with chlorophyll

Spanish Central: Translation of chlorophyll

Nglish: Translation of chlorophyll for Spanish Speakers

Britannica English: Translation of chlorophyll for Arabic Speakers

Britannica.com: Encyclopedia article about chlorophyll

Comments on chlorophyll

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