Definition of "interrogation point" []

• See question mark. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Whether the things thus discerned have an objective reality or not, has been one of those questions at which, all my life, the interrogation point has stood unerased."