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photosynthesize

American  
[foh-tuh-sin-thuh-sahyz] / ˌfoʊ təˈsɪn θəˌsaɪz /

verb (used without object)

photosynthesized, photosynthesizing
  1. to produce carbohydrates by photosynthesis.

    Plants with light green leaves don't photosynthesize as well as those with darker leaves.


verb (used with object)

photosynthesized, photosynthesizing
  1. to produce by photosynthesis.

    Plants photosynthesize sugars from carbon dioxide and water.

photosynthesize British  
/ ˌfəʊtəʊˈsɪnθɪˌsaɪz /

verb

  1. (of plants and some bacteria) to carry out photosynthesis

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of photosynthesize

First recorded in 1905–10; photo- ( def. ) + synthesize ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Some of these animals can photosynthesize like plants; some harvest algae and seawater to make calcium carbonate for their underwater castles; some produce their own light or glow in the dark.

From The Wall Street Journal Nov. 21, 2025

In a few months, a single leaf emerges, allowing the plant to photosynthesize and rebuild the energy needed for its next bloom, two to three years later.

From Los Angeles Times Jul. 21, 2025

"So phytoplankton use carbon to photosynthesize while things like mussels also use carbon to build their shells."

From BBC Apr. 17, 2025

During the light phase, they photosynthesize to produce food and energy, which are then used in the dark phase to emit light when mechanical stress is applied.

From Science Daily Oct. 20, 2023

Its leaves harvest sunlight to photosynthesize, so trees compete by shadowing their neighbors.

From "Cosmos" by Carl Sagan

The seaweed grown in acidified water actually grew more, photosynthesized more effectively, and showed no significant increase in drag.

From Science Daily Sep. 25, 2023

Whether you eat meat or not, that energy that was first photosynthesized has traveled to you through different organisms.

From Salon Feb. 10, 2023

The unit was then left on a windowsill, according to New Scientist, where the algae photosynthesized, generating a tiny current of electricity that powered an ARM Cortex-M0+ chip.

From The Verge May 16, 2022

Eventually, the plant returns as a leaf or a flower, photosynthesizing energy in preparation for its next bloom.

From Los Angeles Times Jul. 10, 2026

The term is less taxonomically specific and more of a catchall, used to refer to any photosynthesizing organism that isn’t a plant.

From Slate Jun. 27, 2026

Some acoels also have symbiotic algae sharing the space of the animals' organs, and photosynthesizing inside the animals' body.

From Science Daily May 15, 2024

Most past assessments of plant evolution have compared DNA from plants’ photosynthesizing organelles known as chloroplasts.

From Science Magazine Apr. 23, 2024

Second, when gases from Earth were introduced into the Martian soil sample, the gases became chemically combined with the soil—almost as if there were photosynthesizing microbes, generating organic matter from atmospheric gases.

From "Cosmos" by Carl Sagan

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