pho‧to‧syn‧the‧sis /ˌfəʊtəʊˈsɪnθəsəs, ˌfəʊtəʊˈsɪnθɪsəs $ ˌfoʊtəˈsɪn-/ noun [uncountable] technical
the production by a green plant of special substances like sugar that it uses as food, caused by the action of sunlight on chlorophyll (=the green substance in leaves)
—photosynthesize verb [intransitive and transitive]

[TahlilGaran] Dictionary of Contemporary English ▲