pho·to·syn·the·sis   (fō'tō-sĭn'thĭ-sĭs)    n.  The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct. pho'to·syn·thet'ic (-sĭn-thět'ĭk) adj., pho'to·syn·thet'i·cal·ly adv.

photosynthesis

Use by green plants of the energy in sunlight to carry out chemical reactions, such as the conversion of carbon dioxide into oxygen. Photosynthesis also produces the sugars that feed the plant.

Note: Green plants depend on chlorophyll to carry out photosynthesis.

photosynthesis 

Main Entry: pho·to·syn·the·sis
Pronunciation: "fOt-O-'sin(t)-th&-s&s
Function: noun
Inflected Form: plural -the·ses
: synthesis of chemical compounds with the aid of light sometimes including the near infrared or near ultraviolet; especially : the formation ofcarbohydrates 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 thedecomposition of water followed by various enzymatic synthetic reactions that usually do not require the presence of light —pho·to·syn·the·size /-"sIz/ also British pho·to·syn·the·sise intransitive verb -sized also British -sised; -siz·ing also British -sis·ing
—pho·to·syn·thet·ic /-sin-'thet-ik/ adjective —pho·to·syn·thet·i·cal·ly /-i-k(&-)lE/ adverb

photosynthesis pho·to·syn·the·sis (fō'tō-sĭn'thĭ-sĭs)
n.
The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source.

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pho'to·syn·thet'ic (-sĭn-thět'ĭk) adj.