«وإن كان بالجنس البعيد والخاصة أو بالخاصة وحدها يسمى رسماً ناقصاً»
If the definition uses the remote genus with a property, or the property alone, it is called an incomplete descriptive definition.
Example 1: الإنسان جسم ضاحك
The human is a body capable of laughter.
Example 2: الإنسان ضاحك
The human is capable of laughter.
Both use a property as the distinguishing feature, so both are descriptive. The first uses a remote genus; the second omits a genus, so both are incomplete.