photosynthesise

/F OW0 T OW0 S IH1 N TH AH0 S AH0 S/
verb
  1. 1

    To synthesize carbohydrates from carbon dioxide and water using the energy of light by photosynthesis

Source: https://en.wiktionary.org/wiki/photosynthesise, https://en.wiktionary.org/wiki/photosynthesize