If it costs $5,000 per year to cover education costs, this is an example of a situation where the per annum cost of education is $5,000.
A magazine subscription of 40 dollars per annum.
Origin of per-annum
- Latin per per annum accusative of annus year
From American Heritage Dictionary of the English Language, 5th Edition
- From post-classical Latin per annum, English from the 16th century.