Also asked, which happens once a year?
When you break apart the word biannual, it's easy to remember what it means. The prefix bi-, meaning “two,” tips you off that this is something that happens twice. And you're probably already familiar with annual, which describes something that happens once a year. Put it together and you have biannual: twice a year.
Secondly, what does once a month mean? when you say "once a month" => one time in the month once monthly once => one time monthly : every/each month hope it helps :) They roughly have the same meaning : a event that occurs/appears or happens one time in the month.
In this manner, what is another word for once a year?
Synonyms for once a yearannual. annually. regularly. yearlong. perennial.
What does at least annually mean?
The employer argued it complied with the annual fit-testing requirement because “at least annually thereafter” means that fit testing must be completed at least once each calendar year.
