Middle English word trien comes from Latin tritare

Detailed word origin of trien

Dictionary entry	Language	Definition
tritare	Latin (lat)
trito	Late Latin (LL)
*triare	Latin (lat)
trier	Old French (fro)	(legal) to try (in court). To choose; to select. To find. To pull. To sort. To verify; to make sure of.
trier	Anglo-Norman (xno)
trien	Middle English (enm)

Words with the same origin as trien