Ancient Greek σῖγμα

← Ancient Greek σῐ́ζω (affix)

← Ancient Greek -μᾰ (affix)

← Phoenician 𐤔‬ (borrowed)

→ English sigma (mention)

→ English sigmodont (mention)

→ Esperanto sigmo (mention)

→ Italian sigma (derived)

→ Dutch sigma (derived)

→ Russian сигма (borrowed)