Webster's English Dictionary

Enter the word to look up:

heresy

her.e.sy \'her-*-se-\ n [ME heresie, fr. OF, fr. LL haeresis, fr. LGk 
   hairesis, fr. G]k, action of taking, choice, sect, fr. hairein to take 1a: 
   adherence to a religious opinion contrary to church dogma  1b: denial of a 
   revealed truth by a baptized member of the Roman Catholic C hurch 1c: an 
   opinion or doctrine contrary to church dogma  2a: dissent from a dominant 
   theory or opinion in any field  2b: an opinion or doctrine contrary to the 
   truth or to generally accepted b eliefs