Intracutaneous is a medical term used to describe a procedure that involves injecting a substance, such as a vaccine or medication, directly into the skin. However, there are other words that can also be used to describe this type of injection. For instance, the term "intradermal" is often used interchangeably with intracutaneous. Additionally, the term "subcutaneous" can also describe an injection into the skin, although it refers specifically to the layer of fat underneath the skin. Regardless of the terminology used, injections that penetrate the skin provide a more immediate and powerful effect than oral medications, making them a preferred method for certain treatments.