hydroxyl

noun
hy·​drox·​yl | \ hī-ˈdräk-səl How to pronounce hydroxyl (audio) \

Definition of hydroxyl

1 : the chemical group, ion, or radical OH that consists of one atom of hydrogen and one of oxygen and is neutral or negatively charged

Other Words from hydroxyl

hydroxylic \ ˌhī-​ˌdräk-​ˈsi-​lik How to pronounce hydroxyl (audio) \ adjective

Examples of hydroxyl in a Sentence

Recent Examples on the Web Watson, who is not involved in the TOLIMAN project, is part of a team that recently detected hydroxyl radicals — a component of water — in the atmosphere of a planet orbiting a star about 400 light-years from Earth. NBC News, 24 Nov. 2021 Some of this iron bunches together and reacts with naturally occurring hydrogen peroxide to produce hydroxyl radicals—highly reactive molecules that can harm cells. Nikk Ogasa, Scientific American, 18 Oct. 2021 Overall, the researchers suspect that hydroxyl and hydroperoxyl could be contributing to global oxidation, Inverse reports. Elizabeth Gamillo, Smithsonian Magazine, 4 May 2021 Studies had indicated that some water-like material was present but couldn't differentiate between water and a hydroxyl group (OH), which could exist in some minerals. John Timmer, Ars Technica, 26 Oct. 2020 Bipolar ionizing filters and hydroxyl generators put chemically reactive or electrically charged particles into the air, but careful, rigorous studies of their effectiveness don’t exist yet. Adam Rogers, Wired, 9 Nov. 2020 In organic chemistry, alcohols tend to include hydroxyl, which contributes to making molecules soluble in water. Ashley Strickland, CNN, 26 Oct. 2020 Heat from the sun or micrometeorite impacts could cause hydroxyl molecules to collide to form H2O, Honniball says. Maya Wei-haas, National Geographic, 26 Oct. 2020 These earlier analyses focused on a part of the infrared spectrum where both water and hydroxyl glow. Maya Wei-haas, National Geographic, 26 Oct. 2020

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

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First Known Use of hydroxyl

1869, in the meaning defined at sense 1

History and Etymology for hydroxyl

hydr- + ox- + -yl

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Time Traveler for hydroxyl

Time Traveler

The first known use of hydroxyl was in 1869

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Dictionary Entries Near hydroxyl

hydroxy ketone

hydroxyl

hydroxylamine

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Statistics for hydroxyl

Last Updated

27 Nov 2021

Cite this Entry

“Hydroxyl.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydroxyl. Accessed 2 Dec. 2021.

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More Definitions for hydroxyl

hydroxyl

noun
hy·​drox·​yl | \ hī-ˈdräk-səl How to pronounce hydroxyl (audio) \

Medical Definition of hydroxyl

1 : the chemical group or ion OH that consists of one atom of hydrogen and one of oxygen and is neutral or positively charged

Other Words from hydroxyl

hydroxylic \ ˌhī-​ˌdräk-​ˈsil-​ik How to pronounce hydroxyl (audio) \ adjective

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