Step 1: Identify the abbreviation.
The abbreviation IUI is commonly used in the field of reproductive biology and assisted reproductive technologies (ART).
Step 2: Expand the abbreviation. IUI stands for Intra Uterine Insemination.
Step 3: Brief explanation.
In Intra Uterine Insemination, specially prepared sperm is directly placed into the uterus of a woman during ovulation to increase the chances of fertilisation. It is used as a treatment for certain types of infertility.