obsolete positive regulation of histone deacetylation (obsolete GO:0031065)
activation of histone deacetylation
narrow
stimulation of histone deacetylation
narrow
up regulation of histone deacetylation
exact
up-regulation of histone deacetylation
exact
upregulation of histone deacetylation
exact
OBSOLETE. Any process that activates or increases the frequency, rate or extent of the removal of acetyl groups from histones.