n.
Pronunciation: ˌ pr ā -z ē - ō - ' di-m ē - ə m, ˌ pr ā -s ē -
Function: noun
Etymology: New Latin, alteration of praseodidymium, irregular from Greek prasios, adjective + New Latin didymium didymium
Date: 1885
: a yellowish-white metallic element of the rare-earth group used especially in alloys and in the form of its salts in coloring glass greenish yellow ― see ELEMENT table