point of inflection

Calculus: A point at which the concavity of a mathematical function changes. Points of inflection occur where the second derivative f''(x)=0, and where f'''(x) doesn't =0.

OF COURSE this is urban slang. "Whazzap wit da point of inflection, biatch?"

Point of inflection

When, proverbially speaking, shit hits the fan, especially when one is talking about the us house ofrepresentatives.

If you don't know what a point of inflection is, look at the 2018 us midterms, when the squad was born.