C3 plant A plant in which the first product of photosynthesis is a 3-carbon acid, glycerate 3-phoshate (phosphoglyceric acid).

• C3植物：光合作用的最初产物是3-磷酸甘油酸的植物叫做C3植物，3-磷酸甘油酸是一种三碳化合物。