noun
- A point on a curve where two branches cross, with each branch having a distinct tangent line at that point.
Usage: mathematics; technical
Examples
- The curve has a crunode at the origin where the two loops intersect.
- In algebraic geometry, a crunode is a type of singular point on a plane curve.
- The equation defines a curve with a crunode rather than a cusp.
- Mathematicians distinguish between a crunode and other types of singularities.
- The crunode occurs where the tangent lines of the two branches are different.