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ul·tra·thin | \ ˌəl-trə-ˈthin 
\
\Definition of ultrathin
: extremely or extraordinarily thin ultrathin phones ultrathin fashion models The molecules ride on the surface like a film of soap and assemble themselves into an ultrathin layer about one-millionth of an inch thick.— Mike May
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More Definitions for ultrathin
ultrathin
adjectiveul·tra·thin | \ ˌəl-trə-ˈthin \
\Medical Definition of ultrathin
: exceedingly thin
ultrathin sections for use in electron microscopy
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Time Traveler for ultrathin
The first known use of ultrathin was in 1851
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