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or sun block

[suhn-blok] /ˈsʌnˌblɒk/
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.
a lotion, cream, etc., containing such a substance.
Origin of sunblock
1975-80; sun + block Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for sun block
Contemporary Examples
  • Amenities are plentiful—from sun block to aloe for the sun, or the complimentary mini bar for your enjoyment.

    Gal With a Suitcase Jolie Hunt February 19, 2011
sun block in Medicine

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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