The story
- Proto-Celtic*bekkos
- Gaulish*bekkosbor.?
- Latinbeccus
- Old Spanishbico
- Spanishpico
- Englishpico-
- Proto-Indo-European*ḱwey-
- Proto-Hellenic*kúwanos
- Ancient Greekκῠ́ᾰνος (kŭ́ănos)
- Ancient Greekκῠᾰ́νεος (kŭắneos)
- Englishcyano-
- Ancient Greekβακτηρία (baktēría)
- Ancient Greekβακτήριον (baktḗrion)
- New Latinbactērium
- Englishbacterium
- Englishcyanobacterium
- English todaypicocyanobacterium
From pico- + cyanobacterium.
Etymology from Wiktionary, CC BY-SA 4.0.