What's the adjective for semiannual? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs annualize and annualise which may be used as adjectives within certain contexts.
Of, for, or relating to a whole year, often as a recurring cycle; determined or reckoned by the year; accumulating in the course of a year; performed, executed, or completed over the course of a year. See also circannual.
(botany) Having a life cycle that is completed in only one growing season; e.g. beans, corn, marigold. See Annual plant in Wikipedia. Compare biennial, perennial.
(entomology) Living or lasting just one season or year, as certain insects or insect colonies.