ultrathin

adjective

ul·tra·thin | \ ˌəl-trə-ˈthin

How to pronounce ultrathin (audio)

\

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

Keep scrolling for more

Learn More about ultrathin

Dictionary Entries near ultrathin

ultrasophisticated

ultratraditional

Statistics for ultrathin

Look-up Popularity

Time Traveler for ultrathin

The first known use of ultrathin was in 1851

See more words from the same year

Keep scrolling for more

More Definitions for ultrathin

ultrathin

adjective

ul·tra·thin | \ ˌəl-trə-ˈthin

\

Medical Definition of ultrathin

: exceedingly thin ultrathin sections for use in electron microscopy

Comments on ultrathin

What made you want to look up ultrathin? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

speculate

to form ideas or theories about something

Test Your Vocabulary

Farm Idioms Quiz

What does 'poke' refer to in the expression 'pig in a poke'?

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ