"Fat-soluble" refers to substances that can dissolve in fats and oils. This property is important for certain vitamins, such as vitamin A, vitamin D, vitamin E, and vitamin K. When we consume these vitamins, they are absorbed along with dietary fats in our intestines, allowing our bodies to utilize them effectively. Unlike water-soluble vitamins, which are excreted through urine, fat-soluble vitamins can be stored in the body's fatty tissues and liver. This means that we don't need to consume them every day, but it's still essential to maintain a balanced diet to ensure we get enough of these vital nutrients for overall health.