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per annum

[per an-uh m] /pər ˈæn əm/
by the year; yearly.
Origin of per annum
1595-1605; < Latin
Can be confused
per annum, per capita, per diem. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for annum

per annum

/pər ˈænəm/
every year or by the year
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for annum

per annum

Latin, literally "by the year," from per (see per) + annum, accusative singular of annus "year" (see annual).

Online Etymology Dictionary, © 2010 Douglas Harper
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