Where does “ekspresjonistka” come from?

ekspresjonistka (Polish) comes from Polish ekspresjonista, from French expressionniste, from French expression, from Middle French expression, from Latin expressio, from Latin -tiō, from Latin dissertātiō, from Latin dissertus — small stone, pebble; gravel, rubble.

Ancestry of “ekspresjonistka”, step by step

Step	Language	Word	Meaning
1	Polish	ekspresjonista	expressionist
2	French	expressionniste	expressionist
3	French	expression	expression
4	Middle French	expression	—
5	Latin	expressio	expulsion; expression, pressing
6	Latin	-tiō	tion, -ation, -ing
7	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
8	Latin	dissertus	arranged, disposed; explained
9	Latin	disserere	second-person singular future passive indicative...
10	Latin	dis-	asunder, apart, in two; reversal, removal;...
11	Latin	calceus	shoe
12	Latin	calx	limestone; chalk; the finish line
13	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

Every word from Ancient Greek χάλιξ →Every word from Latin -tiō →Every word from Latin dis- →