Definition of photosynthesis
: synthesis of chemical compounds with the aid of radiant energy and especially light; especially : formation of carbohydrates from carbon dioxide and a source of hydrogen (such as water) in the chlorophyll-containing cells (as of green plants) exposed to light
photosynthesizeplay \ˌfō-tō-ˈsin(t)-thə-ˌsīz\ intransitive verb
photosyntheticplay \ˌfō-tō-sin-ˈthe-tik\ adjective
photosyntheticallyplay \ˌfō-tō-sin-ˈthe-ti-k(ə-)lē\ adverb
Recent Examples of photosynthesis from the Web
Federal authorities say Christensen is responsible for the abduction of Yingying Zhang, 26, a Chinese visiting scholar at the university's Urbana-Champaign campus who was researching photosynthesis and crop productivity.
Zhang was one month into a yearlong program at the university studying photosynthesis and crop productivity, a university spokesperson previously told PEOPLE.
She's been doing research on crop photosynthesis, Kaler said.
Without the colorful algae, which use photosynthesis to produce nutrients for themselves and their hosts, the corals turn white, or bleach.
Farmers have begun to use drones and sensors to monitor variations in everything from photosynthesis levels to leaf color.
Zhang is one month into a yearlong program at the university studying photosynthesis and crop productivity, a university spokesperson tells PEOPLE. •
Zhang, who is from Jianyang, China, was working in the University of Illinois' Department of Natural Resources and Environmental Sciences, researching photosynthesis and crop productivity.
The oxygen given off by this photosynthesis created Earth’s oxygen-rich atmosphere, making the evolution of ever more complex life forms possible.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photosynthesis'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
photosynthesis Has Greek Roots
The Greek roots of photosynthesis combine to produce the basic meaning "to put together with the help of light". Photosynthesis is what first produced oxygen in the atmosphere billions of years ago, and it's still what keeps it there. Sunlight splits the water molecules (made of hydrogen and oxygen) held in a plant's leaves and releases the oxygen in them into the air. The leftover hydrogen combines with carbon dioxide to produce carbohydrates, which the plant uses as food—as do any animals or humans who might eat the plant.
Origin and Etymology of photosynthesis
First Known Use: 1898See Words from the same year
PHOTOSYNTHESIS Defined for English Language Learners
Definition of photosynthesis for English Language Learners
biology : the process by which a green plant turns water and carbon dioxide into food when the plant is exposed to light
PHOTOSYNTHESIS Defined for Kids
Definition of photosynthesis for Students
: the process by which green plants and a few other organisms (as some protists) form carbohydrates from carbon dioxide and water in the presence of light
photosynthetic\-sin-ˈthe-tik\ adjective photosynthetic activity
Medical Definition of photosynthesis
: synthesis of chemical compounds with the aid of light sometimes including the near infrared or near ultraviolet; especially : the formation of carbohydrates from carbon dioxide and a source of hydrogen (as water) in chlorophyll-containing cells (as of green plants) exposed to light involving a photochemical release of oxygen through the decomposition of water followed by various enzymatic synthetic reactions that usually do not require the presence of light
photosynthesize\-ˌsīz\play also British
Learn More about photosynthesis
Spanish Central: Translation of photosynthesis Nglish: Translation of photosynthesis for Spanish speakers Britannica.com: Encyclopedia article about photosynthesis
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