Main Entry: dys·pro·si·um

Pronunciation: \dis-ˈprō-zē-əm, -zh(ē-)əm\

Function: noun

Etymology: New Latin, from Greek dysprositos hard to get at, from dys- + prositos approachable, from prosienai to approach, from pros- + ienai to go — more at issue

Date: 1886

: an element of the rare-earth group that forms highly magnetic compounds — see element table