# Sumatra

/ˌsuˈmɑtɹə/ (US) · CEFR B2 · Noun

Source: https://englishreference.com/word/sumatra
Updated: 2026-08-15

## Definition

a large island in western Indonesia. It is known for its tropical rainforests, volcanoes, and diverse wildlife like tigers and orangutans.

For teachers: a major island in western Indonesia, situated in the Malay Archipelago. It is the sixth-largest island in the world and is notable for its significant biodiversity and volcanic activity.

## Examples

- Sumatra is famous for its high-quality coffee beans.
- Many travelers visit Sumatra to see the unique wildlife in the Gunung Leuser National Park.
- The geological history of Sumatra is defined by its position on the Sunda Megathrust, making the island particularly susceptible to seismic activity and volcanic eruptions.

## Usage notes

- As a proper noun referring to a specific geographical location, it is typically used without an article.

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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.