triquetra

The triquetra, also known as the Trinity knot, is a symbol consisting of three interlaced arcs that form a single continuous line. It is a prominent motif in Celtic knotwork and is commonly found in Insular art, decorative bindings, and early medieval manuscripts.

Etymology: The name derives from the Latin triquetrus, meaning "three-cornered." In contemporary contexts it is frequently called the Trinity knot, and some depictions show the three arcs enclosed within a circle.

Historical context: The design appears in illuminated manuscripts such as the Book of Kells and other insular works from the 7th to 9th centuries. It also appears on stone crosses and metalwork across Europe. The symbol has been interpreted in Christian settings as representing the Trinity, while in pagan and folk traditions it has been linked to triads and the unity of three elements.

Design and symbolism: The triquetra is often drawn with three equal arcs interlaced, forming a triangular outline. It is frequently combined with a circle, creating a continuous, unbroken line symbolizing eternity, unity, and the interconnectedness of mind, body, and spirit in modern neopagan practice.

Modern usage: In contemporary culture the triquetra is widely used in jewelry, art, and popular media as a Celtic or medieval emblem. It is distinguished from the three-leaf trefoil knot and from the Borromean rings, which are distinct knot forms.