noun.
The portion of a population unable to read, generally given as a percentage.
noun.
A word, phrase, or grammatical turn thought to be characteristic of an illiterate person.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
ignorance resulting from not reading
noun.
an inability to read
Word Usage
"Our priorities are all wrong when a one-percent interest rate increase makes the headlines but a 10-percent increase in illiteracy is relegated to the back pages."