Pronunciation: (fûr"tl-u-zā'shun),[key] —n. 1. an act, process, or instance of fertilizing.
2. the state of being fertilized.
3. Biol. a. the union of male and female gametic nuclei.
b. fecundation or impregnation of animals or plants.
4. the enrichment of soil, as for the production of crops.