Where does “taong bisyesto” come from?

taong bisyesto (Tagalog) comes from Tagalog taon, from Proto-Malayo-Polynesian taqun — year.

Ancestry of “taong bisyesto”, step by step

taong bisyesto traces back through two separate lines of ancestry.

via Tagalog taon

StepLanguageWordMeaning
1Tagalogtaonyear
2Proto-Malayo-Polynesiantaqunyear

via Spanish año bisiesto

StepLanguageWordMeaning
1Spanishaño bisiestoleap year
Every word from Proto-Malayo-Polynesian taqun →Every word from Tagalog taon →