Definition & Meaning of "smyth sewing"

What is "smyth sewing"?

Smyth sewing is a durable bookbinding method where the individual sections of a book are sewn together using thread. Each section is stitched through the fold, and then the sections are sewn to one another along the spine, creating a flexible and strong binding. This technique allows the book to open flat and is often used for high-quality books due to its longevity and ability to withstand frequent use without the pages coming loose.