diboron

Etymology tree
Proto-Indo-European *dwóh₁
Proto-Indo-European *dwi-
Proto-Hellenic *dwi-
Ancient Greek δῐ- (dĭ-)bor.
Latin di-bor.
English di-
Middle Persian *bōragbor.
Arabic بَوْرَق (bawraq)der.
Medieval Latin boraxder.
Anglo-Norman boreisbor.
Middle English boras
English borax
English boro-
Proto-Indo-European *kerh₃-der.?
Latin carbōlbor.
French carbonebor.
English carbonbf.
English -on
English boron
English diboron
From di- + boron.