Where does “excreção” come from?

excreção (Portuguese) comes from Late Latin excretio, from Latin excernō, from Latin cernō, from Proto-Italic krinō, from Proto-Indo-European krey- — to sift, separate, divide.

excreção (Portuguese): excretion

Definitions

excretion

Ancestry of “excreção”, step by step

Step	Language	Word	Meaning
1	Late Latin	excretio	excretion
2	Latin	excernō	to sift out, separate
3	Latin	cernō	to distinguish, divide, separate, sift
4	Proto-Italic	krinō	sift, separate; distinguish, discern; decide
5	Proto-Indo-European	krey-	to sift, separate, divide

Every word from Proto-Indo-European krey- →Every word from Proto-Italic krinō →Every word from Latin cernō →