فالتشبيه الاصطلاحي هو الدلالة على مشاركة أمر لأمر في معنى
Technical simile is the indication that one thing shares a meaning with another.
Participation means that a quality pertains to both terms, even though its degree may differ. In “Zayd is like a lion in courage,” courage is the shared quality; the speaker does not claim that human and lion have identical natures or all the same properties.
The definition contains three parts:
“al-dalālah” — speech indicates a meaning.
“mushārakat amr li-amr” — one thing is associated with another through sharing.
“fī maʿnā” — the sharing concerns a particular quality or meaning.
Further qualifications prevent other resemblance-based rhetorical figures from being wrongly included.