Cleavage is the process by which a single-celled zygote divides repeatedly to form a multicellular embryo.

Gastrulation is the process by which the three germ layers (ectoderm, mesoderm, and endoderm) are formed from the epiblast and hypoblast.

Organogenesis is the process by which organs and tissues are formed from the germ layers.

Differentiation is the process by which cells become specialized in structure and function.

Fertilization is the process by which sperm and egg fuse to form a zygote.

Cleavage is the first stage of embryonic development, during which the zygote divides repeatedly to form a multicellular embryo.

Implantation is the process by which the embryo implants into the uterine wall.

Placentation is the process by which the placenta is formed.

Parturition is the process by which the fetus is expelled from the uterus.

Fetal development is the process by which the embryo develops into a fetus.

Fetal maturation is the process by which the fetus matures and prepares for birth.

Larval development is the process by which the embryo develops into a larva.

Metamorphosis is the process by which the larva transforms into an adult.

Developmental biology is the study of the development of organisms.

Embryology is the study of the development of embryos.