The "allotment" (i.e., "ration") of patience/forgiveness/understanding that someone "sets aside" for dealing with a certain situation, person, etc. --- the larger the toleration, the less likely he is to blow his stack or be hostile/unsupportive in said instance.
If someone is hot-headed or prejudicedoverall, he's not likely to give anyone whom he disagrees with much of any toleration.
The uncomfortable (or even tense) terms upon which two parties co-exist when circumstances, rather than choice, either force them together, prevent them from separating or both.
That's my next-door neighbor. When the power went out after the '04 hurricane we had tolerationship for a few days because I had a barbeque grill and she had a generator.