shannon

shannon — noun

1. Claude Elwood Shannon (1916–2001), an American mathematician and computer scient

1.nounB2
Definition

Claude Elwood Shannon (1916–2001), an American mathematician and computer scientist who created information theory, a mathematical framework for transmitting and storing data that made modern digital communication possible

Example

Ada read about Shannon's work in her digital-communication class at university.

possessive: Shannon's work

Christopher wrote a report explaining how Shannon's information theory makes the internet work.

Common collocations
  • Shannon's work
  • Shannon's theory
  • Claude Shannon
  • information theory
Synonyms

Usage Note

When referring to the person, the full name Claude Shannon is common in academic contexts; the surname Shannon alone is sufficient once the person has been introduced.

Common Mistakes

Shannon discovered the internet.
Shannon created the mathematical theory that made digital communication possible.
Shannon did not invent the internet itself but laid its theoretical foundation.
Alan Turing and Shannon were the same person.
Alan Turing and Claude Shannon were different scientists who both worked on early computing and information theory.
Their work overlapped, but they were distinct individuals.

2. the longest river in Ireland, about 230 miles (370 km) long, flowing through the

2.nounB1
Definition

the longest river in Ireland, about 230 miles (370 km) long, flowing through the west of the country and emptying into the Atlantic Ocean near Limerick

Example

Élise took a boat tour along the Shannon and saw medieval castles on the riverbanks.

collocation: along the Shannon

Feng's family stayed at a hotel on the Shannon during their trip to Ireland.

collocation: on the banks of the Shannon

Common collocations
  • the Shannon
  • River Shannon
  • along the Shannon
  • on the Shannon
  • banks of the Shannon
Synonyms
  • River Shannon

    the formal name with 'River' included, used in official contexts and maps

  • the Shannon

    a shortened form, common in everyday conversation and travel writing

Usage Note

The Shannon is used with the definite article (the Shannon) when referring to the river. In geographical contexts, the name may appear without 'River' — the Shannon — though River Shannon is also common in formal writing.

Common Mistakes

Shannon is a river in England.
The Shannon is a river in Ireland.
The Shannon is in Ireland, not England.
The Shannon flows north into the Atlantic.
The Shannon flows south and west into the Atlantic.
The river's general direction is south-west.

Synonym discussion

Sense: noun/1

Shannon is the surname used alone once context is established — common in technical papers and classroom discussion. Claude Shannon adds the given name and is standard for first mentions, citations, and formal introductions. 'The father of information theory' is a respectful title used in general-audience writing to highlight Shannon's foundational role; it is not an official name and should not replace his actual name in academic citations. 'The Bell Labs scientist' refers to the institution where Shannon worked for most of his career — this description is useful when the focus is on the institutional context of his research rather than the individual himself.

Shannon ↗Claude Shannonthe father of information theorythe Bell Labs scientist

Common collocations

Nouns

Phrases

  • information theory
  • River Shannon
  • the Shannon
  • Shannon's work
  • on the banks of

Prepositions

Etymology

Old IrishIrish GaelicEnglish

The surname Shannon is of Irish origin, coming from the Gaelic name Ó Seanáin, meaning 'descendant of Seanán'. The river name Shannon comes from the Irish name an tSionna or an tSionainn, which may be related to a pre-Celtic word meaning 'old' or 'ancient' — a fitting name for Ireland's longest river. The two senses are connected by this shared Irish Gaelic root, though they refer to different modern entities: a river in Ireland and the surname of the American mathematician.