Where does “Septiyembre” come from?

Septiyembre (Bikol Central) comes from Spanish septiembre, from Spanish setiembre, from Latin septembrem, from Latin september, from Latin Septem, from Proto-Italic septem, from Proto-Indo-European septḿ̥ — seven.

Ancestry of “Septiyembre”, step by step

StepLanguageWordMeaning
1SpanishseptiembreSeptember
2SpanishsetiembreAlternative spelling of septiembre
3Latinseptembremaccusative masculine singular of september;...
4Latinseptemberof September
5LatinSeptemseven; 7
6Proto-Italicseptemseven
7Proto-Indo-Europeanseptḿ̥seven
Every word from Proto-Indo-European septḿ̥Every word from Proto-Italic septemEvery word from Latin Septem