The Commens Dictionary
Quote from ‘Chap. XI. On Logical Breadth and Depth’
Two of the most important characters of general terms are their logical breadth and depth. [—] The depth of a term is that which can be predicated of it. [—] The depth of a term cannot be considered as a collection of things but can only be considered as a complex of terms or of attributes. The term attribute, character, mark or quality is a term of second intention.