Afon Seiont (

Welsh Welsh may refer to: Related to Wales * Welsh, referring or related to Wales * Welsh language, a Brittonic Celtic language spoken in Wales * Welsh people People * Welsh (surname) * Sometimes used as a synonym for the ancient Britons (Celtic peopl ...

, meaning ''River Seiont'' in English) is a

river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of ...

Gwynedd Gwynedd (; ) is a county and preserved county (latter with differing boundaries; includes the Isle of Anglesey) in the north-west of Wales. It shares borders with Powys, Conwy County Borough, Denbighshire, Anglesey over the Menai Strait, an ...

, Wales which runs into the

Menai Strait The Menai Strait ( cy, Afon Menai, the "river Menai") is a narrow stretch of shallow tidal water about long, which separates the island of Anglesey from the mainland of Wales. It varies in width from from Fort Belan to Abermenai Point to from ...

. Its source is the outflow of

Llyn Padarn Llyn Padarn is a glacially formed lake in Snowdonia, Gwynedd, north Wales, and is an example of a moraine dammed lake. The lake is approximately long (about 240 acres) and at its deepest point is deep, and is one of the largest natural lakes ...

near Llanberis, and it flows out in a generally northwest direction. Between the outflow and the village of

Llanrug Llanrug (or Llanfihangel-yn-y-grug) is a medium-sized village and community in Gwynedd, north-west Wales. It lies about to the east of Caernarfon, south of Bangor and northwest of Llanberis. It is the largest populated village in the Arfon ...

it is known as the Afon Rhythallt, changing its name just after the village. Its mouth is in the town of

Caernarfon Caernarfon (; ) is a royal town, community and port in Gwynedd, Wales, with a population of 9,852 (with Caeathro). It lies along the A487 road, on the eastern shore of the Menai Strait, opposite the Isle of Anglesey. The city of Bangor ...

, forming a natural harbour as it flows out into the Menai Strait. The Afon Nant Peris provides the main inflow into

Llyn Peris Llyn Peris is a lake in Snowdonia, Wales, approximately 1.8 km long and situated close to the villages of Llanberis and Nant Peris, and the smaller twin of Llyn Padarn. The lake was formed glacially and is an example of a moraine-dammed lak ...

which then drains into Llyn Padarn with the addition of the waters of the Afon Arddu which drains the northern slopes of

Snowdon Snowdon () or (), is the highest mountain in Wales, at an elevation of above sea level, and the highest point in the British Isles outside the Scottish Highlands. It is located in Snowdonia National Park (') in Gwynedd (histori ...

. The name of the Roman fort of

Segontium Segontium ( owl, Cair Segeint) is a Roman fort on the outskirts of Caernarfon in Gwynedd, North Wales. The fort, which survived until the end of the Roman occupation of Britain, was garrisoned by Roman auxiliaries from present-day Belgium and Ge ...

, near Caernarfon, is based on the Latinised form of the name 'Seiont'. In the Brythonic language *seg-ontio translates as "strong place".Ranko Matasović. "sego-" in: Etymological Dictionary of Proto-Celtic. Indo-European Etymological Dictionaries Online. Edited by Alexander Lubotsky. Brill, 2015. Brill Online. February 8, 2015. http://iedo.brillonline.nl/dictionaries/lemma.html?id=17113

References

Bontnewydd, Gwynedd Caernarfon Llanddeiniolen Llanrug Waunfawr Rivers of Gwynedd Sites of Special Scientific Interest in West Gwynedd Menai Strait {{Wales-river-stub

See also

References