A more thorough explanation:

Definition: Sex reassignment is a medical process that aims to change a person's gender. It involves surgery and hormonal treatments that alter a person's physical characteristics to match their gender identity. This process is also known as sex change.

• A person who was assigned male at birth but identifies as female may undergo sex reassignment to physically transition to a female body.
• A person who was assigned female at birth but identifies as male may undergo sex reassignment to physically transition to a male body.

These examples illustrate how sex reassignment is a medical process that helps individuals align their physical characteristics with their gender identity. It is a complex and often lengthy process that involves multiple medical procedures and ongoing support from healthcare professionals.