Technical term used in mathematics, physics, and formal contexts to describe a lack of continuity or a break in a sequence.
This function has a discontinuity.
A discontinuity in the geological strata was observed.
Compound of 非 (hi, 'non-') + 連続 (renzoku, 'continuity') + 性 (sei, '-ness'). A straightforward Sino-Japanese technical term.