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sunblock

or sun block

[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.
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Origin of sunblock

First recorded in 1975–80; sun + block
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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