Term Name:	rDNA heterochromatin formation
Synonyms:	chromatin silencing at rDNA, chromatin silencing at ribosomal DNA, heterochromatic silencing at rDNA, rDNA chromatin silencing, rDNA heterochromatin assembly
Definition:	The formation of heterochromatin at ribosomal DNA, characterized by the modified histone H3K9me3.
Ontology:	GO: Biological Process [GO:0000183]    QuickGO    AmiGO