  Modeling the structure formation in the universe, we extend the spherical
collapse model in the context of MOND starting with the linear Newtonian
structure formation followed by the MONDian evolution. In MOND the formation of
structures speed up without a need for dark matter. Starting with the top-hat
over-dense distribution of the matter, the structures virialize with a
power--law profile of the distribution of matter. We show that the
virialization process takes place gradually from the center of the structure to
the outer layers. In this scenario the smaller structures enter to the MONDian
regime earlier and evolve faster, hence they are older than larger structures.
We also show that the virialization of the structures occur in the MONDian
regime, in which the smaller structures have stronger gravitational
acceleration than the larger ones. This feature of the dynamical behavior of
the structures is in agreement with this fact that the smaller structures as
the globular clusters or galactic bulges have been formed earlier and need less
dark matter in CDM scenario.
