Jörmungandr
World Serpent in Norse mythology

In Norse mythology, Jörmungandr (Old Norse: Jǫrmungandr, see Etymology), also known as the Midgard Serpent or World Serpent (Old Norse: Miðgarðsormr, "worm of Midgard"), is an unfathomably large and monstrous sea serpent (or "worm", see Germanic dragon) who dwells in the world sea, encircling the Earth (Midgard) and biting his own tail, an example of an ouroboros. As a result of him surrounding Midgard, the beast is referred to as the World Serpent. Jörmungandr releasing his tail is one of the signs of the beginning of Ragnarök.
Jörmungandr is said to be the middle child of the god Loki and the jötunn Angrboða. According to the Prose Edda, Odin took Loki's three children by Angrboða – the wolf Fenrir, underworld ruler Hel, and the serpent Jörmungandr – and removed them from Asgard (the world of the Æsir). The serpent Jörmungandr was tossed into the great ocean that encircles Midgard. There the serpent grew so large that he was able to surround the Earth and grasp his own tail. The old Norse thunder god, Thor, has a lengthy feud with Jörmungandr and the serpent is regarded as his archenemy. During Ragnarök, Thor and Jörmungandr engage in a ferocious battle, culminating in both of their deaths.
Etymology
The name Jǫrmungandr is a poetic title and consists of the prefix jǫrmun- and the word gandr.
This brief starts where responsible research should: with the source description of “Jörmungandr” as world Serpent in Norse mythology. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as world Serpent in Norse mythology. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 5, 2026. The linked authority identifier is Q181227. None of the 0 selected statements returned an explicit reference.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Jörmungandr”, its source revision and the description used here.
- Expand the search: follow Jörmungandr primary sources, Jörmungandr archive and Jörmungandr research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Jörmungandr”?
- Which cited source is closest to the event, object or claim?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “Jörmungandr” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.