Iltizam occurs when a word indicates a necessary implication of its assigned meaning, not a constituent of that meaning.
The book’s example is “human” indicating the capacity for knowledge.
This capacity is not presented as one of the two explicit constituents “animal” and “rational”; it is treated as necessarily connected to that concept. Thus the mind moves from the full meaning to its implication.
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Definition of necessary implication
The Three Kinds of Conventional Verbal Indication
Iltizam occurs when a word indicates a necessary implication of its assigned meaning, not a constituent of that meaning.
The book’s example is “human” indicating the capacity for knowledge.
This capacity is not presented as one of the two explicit constituents “animal” and “rational”; it is treated as necessarily connected to that concept. Thus the mind moves from the full meaning to its implication.