Middle English; earliest use found in Layamon (fl. 1250), poet. From ancient Greek ψαλτήριον, originally via Old French psalteriun, Old French, Middle French salterion, psalterion.
Definition of psalterion in US English:
psalterion
noun
Psaltery.
Origin
Middle English; earliest use found in Layamon (fl. 1250), poet. From ancient Greek ψαλτήριον, originally via Old French psalteriun, Old French, Middle French salterion, psalterion.