semi·​met·​al | \ ˌse-mē-ˈme-tᵊl How to pronounce semimetal (audio) , ˌse-ˌmī-, -mi- \

Definition of semimetal

: an element (such as arsenic) possessing metallic properties in an inferior degree and not malleable

Keep scrolling for more

Other Words from semimetal

semimetallic \ ˌse-​mē-​mə-​ˈta-​lik How to pronounce semimetallic (audio) , ˌse-​ˌmī-​ , -​mi-​ \ adjective

Examples of semimetal in a Sentence

Recent Examples on the Web Researchers have since made monolayers of metals, semimetals, insulators and more, but magnetism was the final holdout. Sylvia Morrow, Discover Magazine, "One Magnet to Bind Them All," 1 Feb. 2018 Now physicists may finally observed this phenomenon, mixed axial-gravitational anomaly, in a class of exotic materials known as Weyl semimetals. Kenneth Chang, New York Times, "An Experiment in Zurich Brings Us Nearer to a Black Hole’s Mysteries," 19 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'semimetal.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of semimetal

1661, in the meaning defined above

Keep scrolling for more

Learn More about semimetal

Time Traveler for semimetal

Time Traveler

The first known use of semimetal was in 1661

See more words from the same year

Statistics for semimetal

Cite this Entry

“Semimetal.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2020.

More from Merriam-Webster on semimetal Encyclopedia article about semimetal

Comments on semimetal

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


Test Your Vocabulary

A Thanksgiving Word Quiz

  • a traditional thanksgiving dinner
  • November comes from a word for which of the following numbers?
Spell It

Can you spell these 10 commonly misspelled words?


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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!