cytotoxin

Etymology tree
Ancient Greek κύτος (kútos)lbor.
English cyto-
Ancient Greek τόξον (tóxon)
Proto-Indo-European *-kos
Ancient Greek -κός (-kós)
Ancient Greek -ῐκός (-ĭkós)
Ancient Greek τοξῐκός (toxĭkós)
Ancient Greek τοξικόν (toxikón)der.
Latin toxicum
Proto-Indo-European *-nós
Proto-Indo-European *-iHnos
Proto-Italic *-īnos
Latin -īnusder.
Old French -inbor.
Middle English -in
English -ineclip.
English -in
English toxin
English cytotoxin
From cyto- + toxin.