acatalepsy

from The Century Dictionary.

• noun Incomprehensibility.
• noun In medicine, uncertainty in the diagnosis or prognosis of diseases.
• noun A weak understanding; mental deficiency.

from the GNU version of the Collaborative International Dictionary of English.

• noun Incomprehensibility of things; the doctrine held by the ancient Skeptic philosophers, that human knowledge never amounts to certainty, but only to probability.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Incomprehensibility of things; the doctrine held by the ancient Skeptic philosophers, that human knowledge never amounts to certainty, but only to probability.