subaudition

sub·au·di·tion

1. The act of understanding and mentally supplying a word or thought that has been implied but not expressed.
2. A word or thought supplied by subaudition.

Origin: Late Latin subaudītiō, subaudītiōn-, from subaudītus, past participle of subaudīre, to supply an omitted word : Latin sub-, sub- + Latin audīre, to hear; see au- in Indo-European roots.