double bond

noun

Definition of double bond

: a chemical bond in which two pairs of electrons are shared by two atoms in a molecule — compare single bond, triple bond

Examples of double bond in a Sentence

Recent Examples on the Web The chemical structure of Delta-8 THC is almost identical to that of delta-9 THC, with the exception of the position of the double bond on the chain of carbon atoms. The Salt Lake Tribune, 8 May 2022 The chemical structure of Delta-8 THC is very similar to delta-9 THC, except for the position of the double bond on the chain of carbon atoms. The Salt Lake Tribune, 27 Apr. 2022 Namely, while Delta-9 has what is known as a double bond on its ninth carbon atom, Delta-8 has one of its double bonds on the eighth — hence the names. Molly Longman, refinery29.com, 12 Aug. 2021 But that modest change allows Z to form a triple hydrogen bond with T, which is more stable than the double bond that holds together A-T. Quanta Magazine, 12 July 2021 All that separates them is the location of a double bond, found on the eighth carbon in delta-8 THC and the ninth carbon in delta-9. Kaitlin Sullivan, NBC News, 28 June 2021 Incorporating his innovative use of aldehydes, which are organic compounds where a carbon atom shares a double bond with an oxygen atom, a single bond with a hydrogen atom, and a single bond with another atom to form the carbonyl group. Allyson Portee, Forbes, 16 Apr. 2021 In recent years investigators have developed photocatalysts that break the resistant double bond between carbon and oxygen in carbon dioxide. Javier Garcia Martinez, Scientific American, 10 Nov. 2020 The melting point of a fat is linked to its level of saturation — the number of single bonds versus double bonds in its fatty-acid chain. J. Kenji López-alt, New York Times, 3 Mar. 2020 See More

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

First Known Use of double bond

1889, in the meaning defined above

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Time Traveler for double bond

Time Traveler

The first known use of double bond was in 1889

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Dictionary Entries Near double bond

double boiler

double bond

double-book

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Statistics for double bond

Last Updated

16 May 2022

Cite this Entry

“Double bond.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/double%20bond. Accessed 29 Jun. 2022.

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More Definitions for double bond

double bond

noun

Medical Definition of double bond

: a chemical bond in which two pairs of electrons are shared by two atoms in a molecule and which is usually represented in chemical formulas by two lines (as in the formula for ethylene H2C=CH2) — compare triple bond — see unsaturated sense b

More from Merriam-Webster on double bond

Britannica.com: Encyclopedia article about double bond

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