The name Londinium is thought to be pre-Roman (and possibly pre-Celtic) in origin although there has been no consensus on what it means. It was common practice for Romans to adopt native names for new settlements. A common theory is that it derives from a hypothetical Celtic placename Londinion which was probably derived from the personal name Londinos, from the word lond meaning 'wild'.
- accusative of
- vocative of
Second declension neuter with locative.
- English: London