verb (used with object), nom·i·nal·ized, nom·i·nal·iz·ing.
  1. to convert (another part of speech) into a noun, as in changing the adjective lowly into the lowly or the verb legalize into legalization.
  2. to convert (an underlying clause) into a noun phrase, as in changing he drinks to his drinking in I am worried about his drinking.
Also especially British, nom·i·nal·ise.

Origin of nominalize

First recorded in 1650–60; nominal + -ize
Related formsnom·i·nal·i·za·tion, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018