PHOTOSYNTHESIS

[pho.to.syn.the.sis] n [NL] (1898): synthesis of chemical compounds with the aid of radiant energy and esp. light; esp: formation of carbohydrates from carbon dioxide and a source of hydrogen (as water) in the chlorophyll-containing tissues of plants exposed to light -- pho.to.syn.the.size vi -- pho.to.syn.thet.ic adj -- pho.to.syn.thet.i.cal.ly adv