Define the term: Implantation

Explanation

**Step-by-Step Text Solution:**

1. **Definition of Implantation**: Implantation is the process by which an embryo attaches itself to the thick lining of the uterus.

2. **Fertilization**: The process begins with fertilization, which occurs in the fallopian tube, where a sperm cell fertilizes an egg to form a zygote.

3. **Development of the Embryo**: After fertilization, the zygote undergoes multiple cell divisions to develop into an embryo as it travels towards the uterus.

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