solar sail

noun

Definition of solar sail

: a propulsive device for a spacecraft that consists of a flat material (such as aluminized plastic) designed to receive thrust from solar radiation pressure

Recent Examples of solar sail from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'solar sail.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of solar sail

1958

in the meaning defined above

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