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Use "fertilisation" in a sentence
"The term "fertilisation" could be taken to mean anything from the penetration of the egg by the sperm, to the implantation of the egg into the uterus which happens later."
"Because human beings only ever have sex when fertilisation is most optimal."
"It is important in horticulture and agriculture, because fruiting is dependent on fertilisation, which is the end result of pollination."