1. trillionfold - Adjective
2. trillionfold - Adverb
trillionfold (not comparable)
By a multiple of one trillion; by a trillion times as much or as many.
The volume occupied by the star's exploding gases underwent a trillionfold increase.
trillionfold (not comparable)
By a factor of one trillion.
The national debt has ballooned trillionfold in the past century.