Wiktionary:Word of the day/December 18
|primum mobile n|
Today is UN Arabic Language Day, one of six such days established by UNESCO to celebrate multilingualism and cultural diversity and to promote the equal use of its working languages. The term primum mobile is a calque of Arabic مُحَرِّك أَوَّل (muḥarrik ʾawwal, literally “first mover”).
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