sun block

sunblock

[suhn-blok]
noun
1.
a substance that provides a high degree of protection against sunburn, often preventing most tanning as well as burning, as by obstructing the penetration of ultraviolet rays.
2.
a lotion, cream, etc., containing such a substance.
Also, sun block.


Origin:
1975–80; sun + block

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
sun cream or sun block
 
n
a chemical, usually in the form of a cream, applied to exposed skin to block out all or almost all of the ultraviolet rays of the sun
 
sun block or sun block
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

sun block n.
A preparation, as of PABA, that prevents sunburn by filtering out the sun's ultraviolet rays, usually offering more protection than a sunscreen.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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