macrobacterium

Etymology tree
Proto-Indo-European *meh₂ḱ-
Proto-Indo-European *-rós
Proto-Indo-European *mh₂ḱrós
Proto-Hellenic *makrós
Ancient Greek μᾰκρός (măkrós)der.
French macro-der.
English macro-
Ancient Greek βακτηρία (baktēría)
Proto-Indo-European *-yósder.
Ancient Greek -ῐος (-ĭos)?
Ancient Greek -ιον (-ion)
Ancient Greek βακτήριον (baktḗrion)bor.
New Latin bactēriumbor.
English bacterium
English macrobacterium
From macro- + bacterium.