Definition of Sumatra
island of western Indonesia south of the Malay Peninsula area 182,542 square miles (472,784 square kilometers) ◆The Equator divides Sumatra into two almost equal parts.
Sumatranplay \-trən\ adj or noun
SUMATRA Defined for English Language Learners
Definition of Sumatra for English Language Learners
: island of Indonesia
Learn More about sumatra
Britannica.com: Encyclopedia article about Sumatra
Seen and Heard
What made you want to look up Sumatra? Please tell us where you read or heard it (including the quote, if possible).