What is the defining characteristic of a "rectified tile"?

A rectified tile is defined by the fact that it has been mechanically finished to achieve uniform size and straight edges. This finishing process ensures that each tile is precisely cut to the same dimensions, allowing for minimal grout joints and a more seamless appearance when installed. This characteristic is vital in modern tile applications, especially for achieving a clean, professional finish in both residential and commercial settings.

The uniformity and straight edges enable designers and installers to create patterns and layouts with a high degree of accuracy, making rectified tiles a popular choice for contemporary flooring and wall projects. This precision also allows for various installation techniques, such as tight grout lines, which can enhance the aesthetics of tile installations.

The other options do not reflect the defining feature of rectified tiles, as they pertain to other aspects unrelated to the mechanical finishing and uniformity of size and edges.