Where does “pano” come from?

pano (Bikol Central) comes from Bikol Central ano, from Proto-Philippine *anuh, from Proto-Malayo-Polynesian anu, from Proto-Austronesian (na-)nu — what.

Ancestry of “pano”, step by step

pano traces back through 3 separate lines of ancestry.

via Bikol Central ano

StepLanguageWordMeaning
1Bikol Centralano—
2Proto-Philippine*anuhwhat? interrogative pronoun
3Proto-Malayo-Polynesiananuwhat?
4Proto-Austronesian(na-)nuwhat

via Proto-Philippine pənuq

StepLanguageWordMeaning
1Proto-Philippinepənuq—
2Proto-Malayo-Polynesianpənuq—
3Proto-AustronesianpəNuqfull

via Bikol Central pa

StepLanguageWordMeaning
1Bikol Centralpa—
Every word from Proto-Austronesian (na-)nu →Every word from Proto-Malayo-Polynesian anu →Every word from Proto-Philippine *anuh →