| Selonian | |
| Also Known As: | Selian |
| States: | Latvia and Lithuania |
| Extinct: | 16th century |
| Familycolor: | Indo-European |
| Fam2: | Balto-Slavic |
| Fam3: | East Baltic |
| Iso3: | sxl |
| Linglist: | sxl |
| Glotto: | none |
| Notice: | IPA |
Selonian was an East Baltic language, which was spoken by the East Baltic tribe of the Selonians, who until the 15th century lived in Selonia, a territory in southeastern Latvia and northeastern Lithuania. The language persisted until the 16th century.[1]
Traces of the Selonian language can still be found in the territories the Selonians inhabited, especially in the accent and phonetics of the so-called Selonian dialect of the Latvian language. There are some traces of the Selonian language in the northeastern sub-dialects of the Aukštaitian dialect of the Lithuanian language, mostly in the lexicon.
It is considered that the Selonian language retained the Proto-Baltic sonorant diphthongs *an, *en, *in, *un like the Lithuanian language, but like the Latvian language the Proto-Baltic pronounced as /