an·ti·he·mo·phil·ic factor (?n?t?-h??m?-f?l??k, ?n?t?-)n. Abbr. AHF See factor VIII.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.