# sturgeon

/ˈstɝdʒən/ (US) · /stˈɜːdʒən/ (UK)

Source: https://englishreference.com/word/sturgeon
Updated: 2026-08-27

## Senses

### 1. the fish

noun · CEFR C2 · Technical

a very large, long-lived fish that lives in both salt and fresh water, known for producing caviar.

For teachers: any large primitive fish of the family Acipenseridae, characterized by bony plates and prized for its roe.

- The sturgeon can live for over a hundred years in the wild.
- Conservationists are working to restore the population of Atlantic sturgeon, which has been decimated by overfishing and habitat loss.

### 2. military submarine

noun · CEFR C2 · American English · Technical

a type of powerful submarine used by the US Navy during the Cold War.

For teachers: a member of the Sturgeon-class of nuclear-powered attack submarines operated by the United States Navy.

- He served on a sturgeon during his time in the navy.
- The Sturgeon-class submarines were designed specifically for anti-submarine warfare in the deep waters of the open ocean.

## Examples

- The sturgeon swam slowly along the bottom of the river.
- Conservationists are working to protect the local sturgeon population, which has declined due to overfishing and habitat loss.
- The Atlantic sturgeon is often described as a living fossil because its physical characteristics have remained largely unchanged for millions of years.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.