English word rebirthday comes from English day, English rebirth.
Rebirthday detailed word origin explanation
|day || English (eng) ||(US, meteorology) A 24-hour period beginning at 6am or sunrise.. (astronomy) Rotational period of a planet (especially Earth).. A period from midnight to the following midnight.. A period of contention of a day or less.. A specified time or period; time, considered with reference to the existence or prominence of a person or thing; age; time.. Any period of 24 hours.. Part of a day period [...] |
|rebirth || English (eng) ||Reincarnation; new birth subsequent to one's first.. Revival, reinvigoration.. Spiritual renewal. (transitive) To cause to be born again or spiritually renewed. |
|rebirthday || English (eng) ||A day of rebirth or its anniversary. |