monodesethyl

Etymology tree
Proto-Indo-European *mender.
Proto-Hellenic *mónwos
Ancient Greek μόνος (mónos)
Ancient Greek μονο- (mono-)der.
English mono-
Proto-Indo-European *dwóh₁
Proto-Indo-European *d(w)is-
Proto-Italic *dis-
Latin dis-
Old French des-bor.
▲
Latin dis-bor.
Middle English des-
English des-
Proto-Indo-European *h₂eydʰ-der.
Proto-Hellenic *áitʰō
Ancient Greek αἴθω (aíthō)
▲
Ancient Greek ᾱ̓ήρ (āḗr)influ.?
Ancient Greek αἰθήρ (aithḗr)der.
Latin aethērbor.
German Äther
German Ether
Proto-Indo-European *swel-der.?
Ancient Greek ῡ̔́λη (hū́lē)der.
German -yl
German Ethylbor.
English ethyl
English desethyl
English monodesethyl
From mono- + desethyl.