Where does “सप्तमातृका” come from?

सप्तमातृका (Sanskrit) comes from Sanskrit मातृका, from Sanskrit मातृ, from Proto-Indo-Aryan máHtā, from Proto-Indo-Iranian máHtā, from Proto-Indo-European méh₂tēr — mother.

Ancestry of “सप्तमातृका”, step by step

सप्तमातृका traces back through two separate lines of ancestry.

via Sanskrit मातृका

StepLanguageWordMeaning
1Sanskritमातृकाmother
2Sanskritमातृmother
3Proto-Indo-AryanmáHtā—
4Proto-Indo-IranianmáHtāmother
5Proto-Indo-Europeanméh₂tērmother

via Sanskrit सप्त

StepLanguageWordMeaning
1Sanskritसप्त= सप्तन्
2Proto-Indo-Aryansaptá—
3Proto-Indo-Iraniansaptáseven
4Proto-Indo-Europeanseptḿ̥seven
Every word from Proto-Indo-European méh₂tēr →Every word from Proto-Indo-Iranian máHtā →Every word from Proto-Indo-Aryan máHtā →