Photo (light)
Photo
Greek phos, photos: light.
Plants use sunlight to make food by photosynthesis.
Photosynthesis
How green plants make food using sunlight.
Leaves need sunlight for photosynthesis.
Photocopy
A copy of a page made using light.
Rohan made a photocopy of his library card for the form.
Remember: Photo = light: a photograph is 'writing with light' (see Graph). Stress: foh-toh-SIN-thuh-sis. Photo on its own is a clipping of photograph.