In general, a property or feature of any object is defined as an attribute. For instance, an attribute of a chair can be its color, height, and width. It also implies same on living objects.
For example, an attribute of a cow is its color, size, milk and shape. Moreover, the term attribute doesn’t only use for a tangible object, but it is also used for intangible things.
In computing, an attribute defines a property of an object (defined in programming), file or element.
If you want to know about additive identity, you can use our Additive Identity Definition.