Where does “կաթիկ” come from?

կաթիկ (Armenian) comes from Armenian կաթ, from Old Armenian կաթն, from Old Armenian կաղթն, from Proto-Armenian gl̥kt-m, from Proto-Armenian gl̥kt-s.

Ancestry of “կաթիկ”, step by step

StepLanguageWordMeaning
1Armenianկաթmilk
2Old Armenianկաթնmilk
3Old Armenianկաղթն—
4Proto-Armeniangl̥kt-m—
5Proto-Armeniangl̥kt-s—
Every word from Proto-Armenian gl̥kt-s →Every word from Proto-Armenian gl̥kt-m →Every word from Old Armenian կաղթն →