Meanings of indicia in English

Over one-quarter of them display indicia of intellectual disability.

The inspector general of the intelligence community, the first to receive the complaint, did find "some indicia of an arguable political bias".

These items are the merest indicia of a whole history of complex emotions, which made this epoch one of continuous though silent and unseen struggle.

And perhaps I ought also to quote the "Indicia of Human Progress", by "Berthaldine, Matrona".