Where does “half birthday” come from?

half birthday (English) comes from English half, from Middle English half, from Old English healf, from Proto-Germanic *halb, from Proto-Germanic halbaz, from Proto-Indo-European (s)kelH-, from Proto-Indo-European (s)kel- — to bend, crook; bent, crooked; leg, heel, knee,...

half birthday (English): The day halfway in between two consecutive...

Definitions

  1. The day halfway in between two consecutive...

Ancestry of “half birthday”, step by step

half birthday traces back through two separate lines of ancestry.

via English half

StepLanguageWordMeaning
1EnglishhalfConsisting of a half; Consisting of some...
2Middle Englishhalfhalf
3Old Englishhealfside; half; partly
4Proto-Germanic*halb
5Proto-Germanichalbazhalf
6Proto-Indo-European(s)kelH-to cut; to split, to separate
7Proto-Indo-European(s)kel-to bend, crook; bent, crooked; leg, heel, knee,...

via English birthday

StepLanguageWordMeaning
1EnglishbirthdayThe anniversary of the day on which someone is...
2Middle Englishbirthdai
3Old Englishġebyrddæġbirthday
Every word from Proto-Indo-European (s)kel-Every word from Proto-Indo-European (s)kelH-Every word from Proto-Germanic halbaz