Definition of hydroxyl in English:

hydroxyl

noun hʌɪˈdrɒksʌɪlhʌɪˈdrɒksɪlhaɪˈdrɑksəl

Chemistry

as modifier Of or denoting the radical —OH, present in alcohols and many other organic compounds.
〔化〕羟基
a hydroxyl group
羟基群。
Example sentencesExamples
- The carbonyl group can be broken down by the action of hydrogen cyanide; a hydroxyl group and a nitrile group are formed in this reaction.
- Water always contains small quantities of two ions, hydronium ions and hydroxyl ions (OH -).
- At present the evidence for hydroxyl radicals being mutagenic is limited.
- In the atmosphere the hydroxyl radicals oxidise nitrates to form ozone.
- Phenols are a subgroup of alcohol in which the hydroxyl groups are attached directly to the carbon atoms of a ring structure.

Origin

Mid 19th century: from a blend of hydrogen and oxygen, + -yl.

Definition of hydroxyl in US English:

hydroxyl

nounhaɪˈdrɑksəlhīˈdräksəl

Chemistry

as modifier Of or denoting the radical —OH, present in alcohols and many other organic compounds.
〔化〕羟基
a hydroxyl group
羟基群。
Example sentencesExamples
- In the atmosphere the hydroxyl radicals oxidise nitrates to form ozone.
- At present the evidence for hydroxyl radicals being mutagenic is limited.
- Phenols are a subgroup of alcohol in which the hydroxyl groups are attached directly to the carbon atoms of a ring structure.
- The carbonyl group can be broken down by the action of hydrogen cyanide; a hydroxyl group and a nitrile group are formed in this reaction.
- Water always contains small quantities of two ions, hydronium ions and hydroxyl ions (OH -).

Origin

Mid 19th century: from a blend of hydrogen and oxygen, + -yl.

词汇	hydroxyl
释义	Definition of hydroxyl in English: hydroxyl noun hʌɪˈdrɒksʌɪlhʌɪˈdrɒksɪlhaɪˈdrɑksəl Chemistry as modifier Of or denoting the radical —OH, present in alcohols and many other organic compounds. 〔化〕羟基 a hydroxyl group 羟基群。 Example sentencesExamples The carbonyl group can be broken down by the action of hydrogen cyanide; a hydroxyl group and a nitrile group are formed in this reaction. Water always contains small quantities of two ions, hydronium ions and hydroxyl ions (OH -). At present the evidence for hydroxyl radicals being mutagenic is limited. In the atmosphere the hydroxyl radicals oxidise nitrates to form ozone. Phenols are a subgroup of alcohol in which the hydroxyl groups are attached directly to the carbon atoms of a ring structure. Origin Mid 19th century: from a blend of hydrogen and oxygen, + -yl. Definition of hydroxyl in US English: hydroxyl nounhaɪˈdrɑksəlhīˈdräksəl Chemistry as modifier Of or denoting the radical —OH, present in alcohols and many other organic compounds. 〔化〕羟基 a hydroxyl group 羟基群。 Example sentencesExamples In the atmosphere the hydroxyl radicals oxidise nitrates to form ozone. At present the evidence for hydroxyl radicals being mutagenic is limited. Phenols are a subgroup of alcohol in which the hydroxyl groups are attached directly to the carbon atoms of a ring structure. The carbonyl group can be broken down by the action of hydrogen cyanide; a hydroxyl group and a nitrile group are formed in this reaction. Water always contains small quantities of two ions, hydronium ions and hydroxyl ions (OH -). Origin Mid 19th century: from a blend of hydrogen and oxygen, + -yl.
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