Full record for solar sail n.

Definition a surface designed to utilize the pressure of solar radiation to provide the propulsive force for a spacecraft to which it is attached
OED requirements antedating 1960
Earliest cite Aeroplane XCIX
Last modified 6 July, 2008

Citations for solar sail n.

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1993 K. S. Robinson Green Mars (new ed.) 135 The material of the two silicate asteroids was transformed by their robot crews into sheets of solar sail material.
1998 D. Brin Heaven's Reach 72 The image you see is caused by a tremendous reflector-and-energy-collector‥a solar sail.
1998 Interzone July 20/1 Time meant nothing to the bioprobes' dreamless minds, chilled almost to coma in the payload of the immense solar sail.