1. [adjective] Happening once every year.
2. [adjective] 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.
3. [adjective] (botany) (of a plant) 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.
4. [adjective] (entomology) Living or lasting just one season or year, as certain insects or insect colonies.
5. [noun] An annual publication; a book, periodical, journal, report, comic book, yearbook, etc., which is published serially once a year, which may or may not be in addition to regular weekly or monthly publication.
6. [noun] (botany) An annual plant; a plant with a life span of just one growing season; a plant which naturally germinates, flowers and dies in one year. Compare biennial, perennial.
7. [noun] (botany) a plant that completes its entire life cycle within the space of a year.
8. [noun] A reference book that is published regularly once every year.
9. [adjective] Completing its life cycle within a year; 'a border of annual flowering plants'.
10. [adjective] Occurring or payable every year; 'an annual trip to Paris'; 'yearly medical examinations'; 'annual (or yearly) income'.
