verb (used with object), nu·cle·at·ed, nu·cle·at·ing. to form (something) into a nucleus.

What is the meaning of nucleating?

transitive verb. 1 : to form into a nucleus : cluster. 2 : to act as a nucleus for. 3 : to supply nuclei to.

What means clustered?

: a number of similar things growing or grouped closely together : bunch a cluster of houses a flower cluster. cluster. verb. clustered; clustering.