holmia

Definitions

A genus of trilobites belonging to the family Olenidæ and characterized by possessing 10 free segments and a small unsegmented pygidium. It occurs in the Lower Cambrian rooks. noun …☝️ Source: The Century Dictionary (view on wordnik.com)
In chem., one of the rare earths, found with yttria in gadolinite, and supposed to be the oxid of a distinct element, holmium: but it may be an as yet unseparated mixture. noun …☝️ Source: The Century Dictionary (view on wordnik.com)
An oxide of holmium. noun …☝️ Source: The GNU version of the Collaborative International Dictionary of English (view on wordnik.com)
holmium oxide noun …☝️ Source: Wiktionary (view on wordnik.com)