Where does “शिर-आधान” come from?

शिर-आधान (Sanskrit) comes from Sanskrit आधान, from Sanskrit आ, from Sanskrit धा, from Proto-Indo-European *dʰaH-.

Ancestry of “शिर-आधान”, step by step

शिर-आधान traces back through two separate lines of ancestry.

via Sanskrit आधान

StepLanguageWordMeaning
1Sanskritआधानputting near or upon, depositing, placing;...
2Sanskritseparated form of आ-; With senses determined by...
3Sanskritधाto put, place, set, lay in or on
4Proto-Indo-European*dʰaH-

via Sanskrit शिरः

StepLanguageWordMeaning
1Sanskritशिरः
Every word from Proto-Indo-European *dʰaH-Every word from Sanskrit धाEvery word from Sanskrit