Eth, represented as ð in lowercase and Ð in uppercase, stands as a distinctive letter in the Icelandic alphabet. Known as “eð” in Icelandic, it occupies the fifth position in the alphabet, directly following the letter d. Its story weaves through Iceland’s literary traditions, computer technology, and connections to other languages in northern Europe.
A letter shaped by centuries
Originally, ð appeared in the alphabets of Old English, Middle English, Icelandic, Faroese (where it is called edd), and Elfdalian. The symbol itself resembles a d with a distinctive crossbar, and is pronounced as a voiced dental fricative, represented in the International Phonetic Alphabet (IPA) as [ð], when appearing between vowels or at the end of a word in Icelandic. Icelandic orthography never allows words to begin with ð, a rule rooted in its status as a voiced dental fricative, which does not occur at the start of native Icelandic words.
Eth’s path through the Germanic languages is notable. While it was once common in Scandinavian writing during the Middle Ages, it was gradually replaced by the letter combination “dh” and eventually by “d” alone. In Faroese, ð’s role is primarily etymological: it rarely corresponds directly to a particular sound, though it can indicate a glide or, in specific cases, be pronounced [ɡ] before r.
In Old English, eth was interchangeable with the runic symbol þ (thorn), both serving to represent the dental fricative now spelled as “th” in modern English. Scholars debate the original Old English name for ð; some suggest “ðæt,” yet alternate research sees this as more likely an abbreviation than a true letter name. Neither ð nor þ appear in the earliest Old English written records, but ð surfaced in royal Mercian charters from the early 8th century and gained widespread use by the 780s. Later, under King Alfred the Great, thorn surged in popularity and effectively replaced eth in everyday writing by the Middle English period.
Modern encoding and culture
The letter ð has found a niche in digital technology. In Unicode, Ð is encoded as U+00D0, and ð as U+00F0. Both code points were inherited from an earlier character set, ISO Latin-1. Keyboard shortcuts exist for inputting ð and Ð on major operating systems, including Mac OS X, Microsoft Windows, and various Linux configurations. These include combinations like Alt+d (for ð) or Alt+Shift+d (for Ð), as well as specific numeric sequences.
Though rare, ð sometimes appears in other contexts. The only known Icelandic band to start its name with ð was Ðe lónlí blú bojs. The letter is also used as the currency symbol for the cryptocurrency Dogecoin and, in linguistic studies, it is a symbol in the International Phonetic Alphabet for the sound [ð].
The continued presence of eth in Icelandic owes something to the linguistic vision of scholars like Rasmus Christian Rask, who played a role in reinstating the letter in the Icelandic language. Today, ð is one more example of Iceland’s ongoing relationship with its linguistic heritage and the broader tapestry of Nordic and European history.
Sources
- Wikipedia
- Wikipedia (Icelandic) in Icelandic
