Medical Dictionary


noun sun·block \ˈsən-ˌbläk\

Medical Definition of SUNBLOCK

:  a preparation (as a lotion) applied to the skin to prevent sunburn (as by physically blocking out ultraviolet radiation); also :  its active ingredient (as titanium dioxide)—compare sunscreen


June 30, 2015
disinformation Hear it
false information deliberately spread
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears