Sex selection is the process of choosing the gender of a child before or during pregnancy. There are various synonyms for sex selection, including gender selection, prenatal sex determination, preconception gender planning, and family balancing. Gender selection is widely used and accepted as a term, and it helps to convey a broader range of selection methods, including pre-implantation genetic diagnosis, sperm sorting, and natural methods. Prenatal sex determination is a more technical term used in medical settings to determine the sex of a fetus through testing. Preconception gender planning is a term used by individuals or couples planning a family to choose the gender of their future child. Family balancing is another term used for sex selection, referring to maintaining an equal balance of boys and girls in a family.