Ancient Greek origin
Source-reportedA popular form of Иси́дор (Isídor), which derives from Ancient Greek Ἰσίδωρος (Isídōros). The unstressed и- (i-) was lost through apheresis.
Sources for this account (4)
- Wiktionary: СидорCC-BY-SA-4.0 · retrieved 2026-10-15
- French Wiktionary: СидорCC-BY-SA-4.0 · retrieved 2026-10-14
- Polish Wiktionary: СидорCC-BY-SA-4.0 · retrieved 2026-10-14
- Russian Wiktionary: СидорCC-BY-SA-4.0 · retrieved 2026-10-14

