Russian origin
Source-reportedA 20th century invention, from a Russian pet form Russian Рая (Raja) of Raisa, or formed by rhyming with the traditional names Maija and Kaija.
Sources for this account (4)
- Wiktionary: RaijaCC-BY-SA-4.0 · retrieved 2026-10-15
- Greek Wiktionary: RaijaCC-BY-SA-4.0 · retrieved 2026-10-15
- Polish Wiktionary: RaijaCC-BY-SA-4.0 · retrieved 2026-10-14
- Russian Wiktionary: RaijaCC-BY-SA-4.0 · retrieved 2026-10-14

