Definition of formaldehyde in English:

formaldehyde

noun fɔːˈmaldɪhʌɪd

mass nounChemistry

A colourless pungent gas in solution made by oxidizing methanol.
Alternative name: methanal; chemical formula: CH₂O
Example sentencesExamples
- They are produced by the polymerization reaction of phenol and formaldehyde.
- Bleach, ethyl alcohol, and formaldehyde can kill the virus in the environment.
- The metabolic byproducts of aspartame are methanol and formaldehyde.
- Set on fire, these items release formaldehyde, polyvinyl chloride, and dioxins.
- Formalin, a solution of formaldehyde, is also used in tanning leather and preserving corpses.

Origin

Late 19th century: blend of formic acid and aldehyde.

Definition of formaldehyde in US English:

formaldehyde

noun

Chemistry

A colorless pungent gas in solution made by oxidizing methanol.
Alternative name: methanal; chemical formula: CH₂O
Example sentencesExamples
- Formalin, a solution of formaldehyde, is also used in tanning leather and preserving corpses.
- Set on fire, these items release formaldehyde, polyvinyl chloride, and dioxins.
- Bleach, ethyl alcohol, and formaldehyde can kill the virus in the environment.
- They are produced by the polymerization reaction of phenol and formaldehyde.
- The metabolic byproducts of aspartame are methanol and formaldehyde.

Origin

Late 19th century: blend of formic acid and aldehyde.

单词	formaldehyde
释义	Definition of formaldehyde in English: formaldehyde noun fɔːˈmaldɪhʌɪd mass nounChemistry A colourless pungent gas in solution made by oxidizing methanol. Alternative name: methanal; chemical formula: CH₂O Example sentencesExamples They are produced by the polymerization reaction of phenol and formaldehyde. Bleach, ethyl alcohol, and formaldehyde can kill the virus in the environment. The metabolic byproducts of aspartame are methanol and formaldehyde. Set on fire, these items release formaldehyde, polyvinyl chloride, and dioxins. Formalin, a solution of formaldehyde, is also used in tanning leather and preserving corpses. Origin Late 19th century: blend of formic acid and aldehyde. Definition of formaldehyde in US English: formaldehyde noun Chemistry A colorless pungent gas in solution made by oxidizing methanol. Alternative name: methanal; chemical formula: CH₂O Example sentencesExamples Formalin, a solution of formaldehyde, is also used in tanning leather and preserving corpses. Set on fire, these items release formaldehyde, polyvinyl chloride, and dioxins. Bleach, ethyl alcohol, and formaldehyde can kill the virus in the environment. They are produced by the polymerization reaction of phenol and formaldehyde. The metabolic byproducts of aspartame are methanol and formaldehyde. Origin Late 19th century: blend of formic acid and aldehyde.
随便看	talk dirty talk dirty talk-down talk down talk down to talk down to talked talked about talked of talkee talkee-talkee talk endlessly talker talker talkers talkfest talk idly talkie talkier talkies talkiest talk in talk-in talk incessantly talk incoherently