What is Annuals?

Annuals definition and meaning on Dictionary terms:

of, for, or pertaining to a year; yearly: annual salary.
occurring or returning once a year: an annual celebration.
Botany. living only one growing season, as beans or corn.
performed or executed during a year: the annual course of the sun.
Entomology. living or lasting but one season or year, as certain insects or colonies of insects.