singularity

A point of infinite density and zero volume, often at a black hole's centre.

"The black hole's core contains a gravitational singularity."

A hypothetical future point where AI surpasses human intelligence, causing rapid, irreversible change.

"Experts debate the arrival of the technological singularity."

The quality of being unique, unusual, or distinctive; a peculiar characteristic.

"Her artistic style possessed a striking singularity."