What does "satisfactory definition" mean? I am reading the book Artificial Intelligence (A modern approach) by Stuart Russell and Peter Norvig. While reading the book, I saw the below sentence in the book.

The Turing Test, proposed by Alan Turing (1950), was designed to provide a satisfactory operational definition of intelligence.

Now the question is, what does the writer mean by saying satisfactory definition?
Does it have a special mathematical meaning (like as we say in some problems: f(x) satisfies some conditions)? or does the satisfactory adjective just mean good enough (as stated in Longman dictionary)?
It means nothing in particular.  You can read it as &quot;good enough&quot;.  It is not encoding some specific technical meaning.