adjective
    
    happening once a year
    
    
    
    
    
    
    
    covering the period of a year
    
    
    
    
    
    always used before a noun of a plant :living for only one year or season :having a life cycle that is one year or season long
    
    
    
    noun
    
    plural -als
    
    [count] a plant that lives for only one year or season
    
    
    
    a book or magazine that is published once a year