Why photosynthesis is named so? Share with your friends Share 5 Mushtaq S answered this Photosynthesis is named so because it utilises light to synthesise food from carbon dioxide and water. Photo means Light and synthesis means making. 9 View Full Answer Aryan answered this photo means light and synthesis mean process 0 Siddharth Bhat answered this the term photosynthesis means photo=light and synthesis=to combine 4 Aashna Joshi answered this photo=light and synthesis=to make food means preparing food 0