Transcription
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- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
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- [kee-teen]
- /ˈki tin/
- /kˈetiːn/
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- US Pronunciation
- US IPA
-
- [kee-teen]
- /ˈki tin/
Definitions of ketene word
- noun ketene a colorless, poisonous gas, C 2 H 2 O, irritating to the lungs, prepared from acetone or acetic acid by pyrolysis: used chiefly in the manufacture of certain commercial chemicals, as acetic anhydride and aspirin. 1
- noun ketene A pungent colorless reactive gas, used as an intermediate in chemical synthesis. 1
- noun ketene a colourless irritating toxic gas used as an acetylating agent in organic synthesis. Formula: CH2:CO 0
- noun ketene a colorless, toxic gas, H2C∶CO, with a penetrating odor, made by passing acetone or acetic acid through hot metal tubes: used esp. as an acetylating agent 0
- noun ketene any of a series of related organic compounds containing the C∶CO group 0
- noun ketene (organic chemistry) any of a class of unsaturated ketones, having a general formula R1R2C=C=O, that react as if they were inner acid anhydrides. 0
Information block about the term
Origin of ketene
First appearance:
before 1905 One of the 15% newest English words
First recorded in 1905-10; ket- + -ene
Historical Comparancy
Parts of speech for Ketene
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
ketene popularity
A common word. It’s meaning is known to most children of preschool age. About 73% of English native speakers know the meaning and use the word.
According to our data about 67% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.