nescience - Definitions from Dictionary.com:

nescience (NESH-uhn(t)s; NESH-ee-uhn(t)s) noun

1. Absence of knowledge or awareness; ignorance.
2. Agnosticism.

Source: The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2000 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

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n : ignorance (especially of orthodox beliefs) [syn: ignorantness, unknowing, unknowingness]

Source: WordNet ® 2.0, © 2003 Princeton University