hydrogen chloride

noun

: a colorless pungent poisonous gas HCl that fumes in moist air and yields hydrochloric acid when dissolved in water

Example Sentences

Recent Examples on the Web Moving forward, the Mars team will use this imaging and spectroscopic data to explore regional differences across the planet, and search for trace gases (including methane and hydrogen chloride) in its atmosphere. Stephanie Mlot, PCMAG, 20 Sep. 2022 The telescope may also be able to help astronomers look for trace gases in the Martian atmosphere, including hydrogen chloride, methane and other chemical compounds. Sarah Kuta, Smithsonian Magazine, 20 Sep. 2022 And the Mars team is looking forward to using Webb's capabilities to pick out the differences between regions on the red planet and search for gases like methane and hydrogen chloride in the atmosphere. Ashley Strickland, CNN, 19 Sep. 2022 Toxic gases: Volcanoes also release toxic gasses, such as carbon dioxide, carbon monoxide, sulfur dioxide, and hydrogen chloride. Maya Wei-haas, National Geographic, 20 Oct. 2019

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

Word History

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of hydrogen chloride was in 1869

Dictionary Entries Near hydrogen chloride

Cite this Entry

“Hydrogen chloride.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20chloride. Accessed 28 Nov. 2022.

Kids Definition

hydrogen chloride

noun

: a colorless sharp-smelling poisonous gas that is made up of hydrogen and chlorine and produces hydrochloric acid when dissolved in water

Medical Definition

hydrogen chloride

noun

: a colorless pungent poisonous gas HCl that fumes in moist air and yields hydrochloric acid when dissolved in water

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