Where does “ahpusu” come from?

ahpusu (Unami) comes from Unami ahpusi, from Unami ahpw-, from Proto-Algonquian apw- — roast, bake.

Ancestry of “ahpusu”, step by step

StepLanguageWordMeaning
1UnamiahpusiTo be baking, to be roasting
2Unamiahpw-To bake, to roast
3Proto-Algonquianapw-roast, bake
Every word from Proto-Algonquian apw- →Every word from Unami ahpw- →Every word from Unami ahpusi →