Etymograph

English

hydrazone

May comes from hydr(o)- + azo- + (ket)one.

Formed from hydro- + azo- + ketone

Proto-Indo-European *wed- ‘water’

Proto-Indo-European *wódr̥ ‘water’

Proto-Hellenic *údōr ‘water’

Ancient Greek ῡ̆̔́δωρ ‘water’

English hydro-

Proto-Indo-European *gʷíh₃weti ‘to live, to be alive’

…

Ancient Greek ζῶ ‘to live’

Ancient Greek ζωή

French azote ‘nitrogen’

English azote ‘nitrogen’

English azo-

French acétone

German Keton

English ketone

The story

May comes from hydr(o)- + azo- + (ket)one.

Today it means

noun Any compound, of general formula R₂C=NNR₂, formally derived from an aldehyde or ketone by replacing the carbonyl group with =NNH₂ or derivative.

Language periods are conventional ranges, not dates for this word.

Etymograph / hydrazone