fertilizing
US: ˈfɝː.t̬əl.aɪz
UK: ˈfɜː.tɪ.laɪz
Cambridge Dictionary
View on Cambridge →1.present participle of fertilize
2.to spread a natural or chemical substance on land or plants, in order to make the plants grow well
3.to cause an egg or seed to start to develop into a new young animal or plant by joining it with a male cell
Bees fertilize the flowers by bringing pollen.
Once an egg is fertilized by the sperm, it becomes an embryo.