# What does singularity mean in the context of black holes? [duplicate]

Non-rotating big stars can be subject to a gravitational collapse increasing their density. When the density is so high that the mass volume shrinks below the event horizon, a black hole is formed.

Is such an "initial" black hole already considered as a singularity, or are there further shrinking processes required in order to consider the black hole to be a singularity? Do the characteristic dynamics of black holes include further shrinking processes until the mass is reduced to a point (or nearly)?

## marked as duplicate by ACuriousMind♦, Community♦Jan 10 '16 at 14:54

• Are you asking about the true singularity at $r=0$, the coordinate singularity at the event horizon or both? – John Rennie Jan 10 '16 at 11:29