Achromatium
noun
Ach·ro·ma·ti·um
\ˌa-krə-ˈmā-shē-əm\
Definition of Achromatium
: the type genus of the family Achromatiaceae
From the M-W Editors
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Origin and Etymology of achromatium
New Latin, from achromat- + -ium
First Known Use: 1894
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