Where does “bulanan” come from?

bulanan (Bikol Central) comes from Bikol Central bulan, from Proto-Philippine bulan, from Proto-Malayo-Polynesian bulan, from Austronesian *bulaN, from Proto-Austronesian bulaN — moon; month; menstruation.

Ancestry of “bulanan”, step by step

StepLanguageWordMeaning
1Bikol Centralbulanmoon; month
2Proto-Philippinebulanmoon
3Proto-Malayo-Polynesianbulanmoon
4Austronesian*bulaN—
5Proto-AustronesianbulaNmoon; month; menstruation
Every word from Proto-Austronesian bulaN →Every word from Austronesian *bulaN →Every word from Proto-Malayo-Polynesian bulan →