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/ˌɛ.θɪ.liːnˈdaɪ.ə.miːn/ · noun
(organic chemistry) The diamine NH₂-CH₂-CH₂-NH₂ that is used in organic synthesis and in the manufacture of polymers.
Use ethylenediamine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Ethylenediamine means (organic chemistry) The diamine NH₂-CH₂-CH₂-NH₂ that is used in organic synthesis and in the manufacture of polymers.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use ethylenediamine where its definition matches the intended context.
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