noun
    
    plural oceans
    
    [noncount] :the salt water that covers much of the Earth's surface
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    see color picture
    
    or Ocean [count] :one of the five large areas of salt water that cover much of the Earth's surface
    
    
    
    
    
    
    
    [count] informal :a very large number or amount of something
    
    
    
    
    
    a drop in the ocean