The word Photosynthesis is formed from the English word Photo meaning light and synthesis meaning synthesis. Photosynthesis means the combination of several substances to create a compound. The process of making carbon compounds in cells using light energy is called photosynthesis. The process of absorbing light energy and converting it into stored chemical energy is called photosynthesis. The biochemical process in which green plants combine water and carbon dioxide with the help of chlorophyll in the presence of sunlight to produce sugary food and release oxygen as a by-product is called Photosynthesis. Charles Barnes first used the term Photosynthesis in 1898.
In energetics terms, the process by which green plants absorb photons of light and convert the light energy into chemical energy is called photosynthesis. Photosynthesis is called oxidation process.