noun
    
    plural -tions
    
    [count] an explanation of the meaning of a word, phrase, etc. :a statement that defines a word, phrase, etc.
    
    
    
    a statement that describes what something is
    
    
    
    
    
    [singular] :a clear or perfect example of a person or thing
    
    
    
    
    
    [noncount] :the quality that makes it possible to see the shape, outline, and details of something clearly
    
    
    
    
    
    
    
    by definition
    
    because of what something or someone is :according to the definition of a word that is being used to describe someone or something