hydroxymethyl

Etymology tree
Proto-Indo-European *wed-
Proto-Indo-European *-r̥
Proto-Indo-European *wódr̥
Proto-Hellenic *údōr
Ancient Greek ῡ̆̔́δωρ (hū̆́dōr)
Ancient Greek ὑδρο- (hudro-)lbor.
French hydro-
Proto-Indo-European *ǵenh₁-
Proto-Indo-European *-os
Proto-Indo-European *ǵénh₁os
Proto-Hellenic *génos
Ancient Greek γένος (génos)
Proto-Indo-European *-os
Proto-Indo-European *-ēs
Ancient Greek -ης (-ēs)
Ancient Greek -γενής (-genḗs)lbor.
French -gène
French hydrogènebor.
English hydrogen
Proto-Indo-European *h₂eḱ-der.?
Ancient Greek ὀξύς (oxús)
▲
Ancient Greek γένος (génos)
French oxygènebor.
English oxygen
Proto-Indo-European *swel-der.?
Ancient Greek ῡ̔́λη (hū́lē)der.
Frenchder.
English -yl
blend
English hydroxyl
English hydroxy-
Proto-Indo-European *médʰu
Proto-Hellenic *métʰu
Ancient Greek μέθυ (méthu)
▲
Ancient Greek ῡ̔́λη (hū́lē)der.
German -yl
German Methylbor.
English methyl
English hydroxymethyl
From hydroxy- + methyl.