Dictionary
curvature singularity
A type of spacetime singularity (i.e. a boundary where spacetime ends) that is associated with infinitely strong gravity and, hence, infinitely strong spacetime curvature.
Two different varieties of curvature singularity are Ricci- and Weyl singularities.
More information about the different types of singularities can be found in the spotlight text Spacetime singularities.