didymium

One entry found for didymium.

Main Entry: di·dym·i·um
Pronunciation: dI-'di-mE-&m
Function: noun
Etymology: New Latin, from Greek didymos twin, from dyo two -- more at TWO
: a mixture of rare-earth elements made up chiefly of neodymium and praseodymium and used especially for coloring glass for optical filters