Verb
annualise (third-person singular simple present annualises, present participle annualising, simple past and past participle annualised) (non-Oxford British spelling)
(transitive) To express (a quantity such as an interest rate, profit, expenditure etc.) as if it applied or were measured over one year.
To annualise net profit, divide the year-to-date net profit by the number of completed months, and multiply by twelve.