Phrase guide

Three Mile Island

name · noun · 5 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

name

Meaning 1

An island of Londonderry Township, Dauphin County, Pennsylvania, United States, on Lake Frederick, Susquehanna River; the site of a nuclear power plant accident in 1979.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

name

Meaning 2

A nuclear power plant located on the island; the site of a nuclear accident in 1979.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

name

Meaning 3

A nuclear reactor core partial meltdown in 1979, at the nuclear power plant's reactor unit 2

Definition source: English Wiktionary via Wiktextract

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Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

name

Meaning 4

An island of the town of Meredith, Belknap County, Lakes Region, New Hampshire, United States, on Lake Winnipesaukee.

Definition source: English Wiktionary via Wiktextract

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Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

An informal unit of measurement for a nuclear disaster, equivalent to that of the incident in 1979 in Pennsylvania

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.