tetraborate

Etymology tree
Proto-Indo-European *kʷetwóres
Proto-Hellenic *kʷétwores
Ancient Greek τέσσᾰρες (téssăres)
Ancient Greek τετρᾰ- (tetră-)bor.
English tetra-
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 bor(on)
English -ate
English borate
English tetraborate
From tetra- + borate.