Where does “Krittikas” come from?

Krittikas (English) comes from Sanskrit कृत्तिका, from Sanskrit -का.

Ancestry of “Krittikas”, step by step

StepLanguageWordMeaning
1Sanskritकृत्तिकाPleiades
2Sanskrit-का—
Every word from Sanskrit -का →Every word from Sanskrit कृत्तिका →