what does fertilization mean
fertilization. n. 1. (Biology) the union of male and female gametes, during sexual reproduction, to form a zygote. 2. (Biology) the act or process of fertilizing. 3. (Biology) the state of being fertilized.ertilization. n. 1. (Biology) the union of male and female gametes, during sexual reproduction, to form a zygote. 2. (Biology) the act or process of fertilizing. 3. (Biology) the state of being fertilized.