Dictionary.com
Thesaurus.com

mercaptan

American  
[mer-kap-tan] / mərˈkæp tæn /

noun

Chemistry.
  1. any of a class of sulfur-containing compounds having the type formula RSH, in which R represents a radical, and having an extremely offensive, garlicky odor.


mercaptan British  
/ mɜːˈkæptæn /

noun

  1. another name (not in technical usage) for thiol

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

mercaptan Scientific  
/ mər-kăptăn′ /
  1. See thiol


Etymology

Origin of mercaptan

1825–35; < Latin, short for phrase corpus mercurium captāns body capturing quicksilver

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Because natural gas has no smell, Piedmont uses mercaptan — also known as methanethiol — to give the gas “a distinctive smell of rotten eggs,” the utility said in a news release.

From Seattle Times Jul. 14, 2022

The CAA has also ordered the gas companies to add the pungent ethyl mercaptan to the gas cylinders to make it easier to smell gas leaks.

From Reuters Dec. 8, 2021

Whether hydrogen sulfide or mercaptan, Southern California residents have often used terms like “rotting” or “rotten” to describe funky smells.

From Los Angeles Times Nov. 22, 2021

Estimates vary, but its odor detection threshold is probably around 0.1 or 0.2 micrograms per cubic meter, significantly lower than ethyl or methyl mercaptan.

From New York Times Feb. 17, 2020

An average man can detect just a few molecules of butyl mercaptan, and most of us can sense the presence of musk in vanishingly small amounts.

From "The Lives of a Cell" by Lewis Thomas

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training