The term "4x6" typically refers to a measurement of four inches by six inches. This size is commonly used for photographs, postcards, and small prints. In photography, a 4x6 print is a standard size that fits easily into frames and albums, making it popular for personal and professional use. In addition to photography, "4x6" can also describe the dimensions of various items, such as index cards or paper for printing. This size is convenient for note-taking, organizing information, and creating visual aids, as it is portable and easy to handle.