Definition of “annual” - Learner’s Dictionary

annual

adjective us uk /ˈænjuəl/
an annual report on the economyan annual subscriptionan annual budget of £30 millionthe annual sales conferenceThe government's annual expenditure on arms has been reduced.
EVERY YEAR
FOR A YEAR

measured over a period of one year:

annual rainfall
annually adverb

(Definition of “annual adjective” from the Cambridge Learner's Dictionary © Cambridge University Press)