Ancient Greek ὂ μικρόν

← Ancient Greek οὖ (mention)

← Phoenician 𐤏‬ (borrowed)

→ English omicron (derived)

→ English omicra (mention)

→ Esperanto omikrono (derived)

→ Finnish omikron (borrowed)

→ Hungarian omikron (derived)

→ Japanese オミクロン (learned borrowing)

→ Translingual thetaiotaomicron (mention)

→ Russian омикрон (borrowed)