Annual
annual
Vicennial refers to a period of 20 years. The term is derived from the Latin word "vicennium," which combines "vicis," meaning "twice," and "annus," meaning "year." It can also describe events or occurrences happening every 20 years.
Biannual describes something that occurs twice a year, once every half year.
Annual
You could refer to it as a quarterly event.
The Latin word Annus refers to "year" in English language.
Coleus plants are typically grown as annuals, meaning they need to be replanted each year.
Accusative singular of 'annus,' meaning 'year.'
Anno domini, from Latin meaning in the year of our Lord
The Latin word for year is annus; a few words with this root are annual and annuity, and the phrase per annum is Latin for "per year".
Each/every/once a year.
The phrase "per annum" comes from Latin, with "per" meaning "each" and "annum" meaning "year." When used in relation to finance or investments, "per annum" indicates that something is expressed on an annual basis.