Substances that provide essential nutrients for plant growth, such as nitrogen, phosphorus, or potassium. Generally used to promote or enhance growth characteristics. Fertilizers may be derived from raw plant material, composts, and other organic matter. Also refers to sexual reproduction using male pollen impregnate the female plant\’s ovary to produce seeds.
Merriam-Webster Online Dictionary
fertilize (verb)transitive verb
to make as - fertile
a) to apply a to - fertilizer fertilize land
b) to cause the of - fertilization
Enhance, Improve, Fortify, Sustain, Support, Bolster, Strengthen, Foster, Develop, Refine, Boost, Supplement, Enliven, Stimulate, Encourage, Promote, Nurture, Fertilize, Enrich, Nourish, Feed, Amend, Cultivate