The Web of Wyrd ("net of wyrd", also "Skuld's net") is a geometric pattern of nine straight staves that cross one another. In this lattice one can – so the idea goes – find the shapes of all the runes. It symbolises fate: everything is woven together, past and present shape the future.
The term has a real, deep root. Wyrd is Old English and means "fate"; the Old Norse counterpart is urðr – at the same time the name of the Norn Urðr, who with her sisters at the well beneath the world tree determines fate. The idea of woven or laid fate is thus old and well attested: the Norns and Valkyries "weave" the threads of life in the poetry.
The drawn Web-of-Wyrd pattern itself, however, is modern. The term "wyrd" became popular in modern times – especially through Brian Bates' novel "The Way of Wyrd" (1983). The geometric nine-stave motif common today appears only in the 1990s. There is no Viking-Age find of this sign. The worldview behind it is old – the symbol as a graphic is new.
"Wits must he have who wanders wide, but all is easy at home."Hávamál 5, after Henry A. Bellows 1923 (public domain)
The "Web of Wyrd" is a geometric symbol of nine crossing lines standing for the web of fate. It is meant to contain all possibilities of past, present and future – a popular motif of today's Norse jewellery and engraving world.
The term wyrd is Old English and means "fate". It is related to the Old Norse Norn Urd (Urðr) and the word for "that which has become". Wyrd means no rigid lot, but the woven mesh of deeds and consequences.
Behind the idea stands a genuine Old Norse image: the Norns determine fate at the well of Urd – they cut, lay and "weave" the threads of life. This idea of woven fate is old and well attested.
The drawn nine-line symbol itself, however, is modern. The idea was popularised by Brian Bates's novel "The Way of Wyrd" (1983); the geometric motif appeared only in the 1990s. A modern expression of an old idea.
More real-vs-invented signs in the big symbol overview; on fate-thinking see our article on Seiðr and the Norns.

Norse symbols: real or invented? · The Valknut · The Triquetra · The Troll Cross · Seiðr – the magic.
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