ENGLISH
REFERENCE

annum

n. countable
C1 Advanced US //ˈænəm// an·num

n. a word for one year. It is mostly used in business or science to talk about how much something costs or happens every year.

n. a period of one year. Typically used in formal financial or scientific contexts to specify a rate or frequency per year.


SIMPLE

The interest rate is five percent per annum.

CONTEXTUAL

The contract states that the employee will receive twenty-five days of paid leave per annum.

COMPLEX

In astronomical terms, the orbital period of the planet is measured per annum, reflecting its journey around the star relative to Earth's calendar year.

Origin

From Latin per annum (“yearly”), from annus (“year”).

Usage

Almost exclusively used in the Latin phrase 'per annum' to mean 'each year' or 'annually'.

Pitfall

The salary is 50,000 per annumlyThe salary is 50,000 per annumLearners often confuse the noun 'annum' with the adverb 'annually'; 'per' must be followed by the noun.

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