प्रधानाधिपति (Sanskrit) comes from Sanskrit अधिपति, from Sanskrit पति, from Proto-Indo-Iranian pátiš, from Proto-Indo-European pótis, from Proto-Indo-European ph₃tis, from Proto-Indo-European peh₃- — to drink.
Ancestry of “प्रधानाधिपति”, step by step
प्रधानाधिपति traces back through two separate lines of ancestry.