thio·​phene | \ˈthī-ə-ˌfēn \

Definition of thiophene 

: a heterocyclic liquid C4H4S from coal tar that resembles benzene

Examples of thiophene in a Sentence

Recent Examples on the Web

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.

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

Statistics for thiophene

Look-up Popularity

Time Traveler for thiophene

The first known use of thiophene was in 1883

See more words from the same year

Keep scrolling for more

More Definitions for thiophene


thio·​phene | \ˈthī-ə-ˌfēn \
variants: also thiophen \-​ˌfen \

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).


a knickknack or trinket

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

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!