Where does “смотри́на” come from?

смотри́на (Russian) comes from Russian смотре́ть, from Proto-Slavic *sъmotriti — to look at, watch.

Ancestry of “смотри́на”, step by step

StepLanguageWordMeaning
1Russianсмотре́тьto look, to gaze
2Proto-Slavic*sъmotritito look at, watch
Every word from Proto-Slavic *sъmotriti →Every word from Russian смотре́ть →