Sets whose intersection is the empty set are called disjoint. What is the opposite of a disjoint set? For example the sets $\{1,2\}$ and $\{2,3\}$ satisfy this condition. I know that you can just say not-disjoint. But I was wondering if there was a specific term for it. I ask this because someone told me that this term existed but that he could`nt remeber. I have searched extensively but I haven't found it.
Elementary Set Theory – Opposite of Disjoint Sets
elementary-set-theoryterminology
Best Answer
If $A\cap B \not= \emptyset$, I say, "$A$ meets $B$."