ICSI stands for Intracytoplasmic Sperm Injection. It is a technique used in assisted reproductive technology (ART) to help couples conceive a child. During ICSI, a single sperm is directly injected into an egg to fertilize it. This procedure is typically used when there are issues with male fertility, such as low sperm count or poor sperm motility. ICSI can be performed as part of in vitro fertilization (IVF) treatment.