thio·​phene | \ ˈthī-ə-ˌfēn How to pronounce thiophene (audio) \

Definition of thiophene

: a heterocyclic liquid C4H4S from coal tar that resembles benzene

Examples of thiophene in a Sentence

Recent Examples on the Web The organic molecules and volatiles, comparable to samples of sedimentary rock rich in organics on Earth, included thiophenes, methylthiophenes methanethiol and dimethylsulfide. Ashley Strickland, CNN, "The Curiosity rover found organic molecules on Mars. This is why they're exciting," 6 Mar. 2020 Numerous organic compounds were discovered, including thiophene, 2- and 3-methylthiophenes, methanethiol, and dimethylsulfide. Jay Bennett, Popular Mechanics, "Chasing Signs of Life, Curiosity Rover Discovers Organic Building Blocks on Mars," 7 June 2018 Only a few of the organic molecules, sulfur-bearing carbon rings called thiophenes, were abundant enough to be detected directly, Eigenbrode says. Paul Voosen, Science | AAAS, "NASA rover hits organic pay dirt on Mars," 7 June 2018

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

See More

First Known Use of thiophene

1883, in the meaning defined above

History and Etymology for thiophene

International Scientific Vocabulary thi- + phene benzene

Keep scrolling for more

Learn More about thiophene

Time Traveler for thiophene

Time Traveler

The first known use of thiophene was in 1883

See more words from the same year

Statistics for thiophene

Last Updated

29 Apr 2020

Cite this Entry

“Thiophene.” Dictionary, Merriam-Webster, Accessed 29 May. 2020.

Keep scrolling for more

More Definitions for thiophene


thio·​phene | \ ˈthī-ə-ˌfēn How to pronounce thiophene (audio) \
variants: also thiophen \ -​ˌfen How to pronounce thiophen (audio) \

Medical Definition of thiophene

: a heterocyclic liquid C4H4S from coal tar that resembles benzene and is used chiefly in organic synthesis

More from Merriam-Webster on thiophene Encyclopedia article about thiophene

Comments on thiophene

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


See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

May 2020 Words of the Day Quiz

  • a blooming wisteria tree
  • Which is a synonym of exiguous?
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!