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heresy

her·e·sy

heresy

 
pronunciation:
he r si
part of speech: noun
inflections: heresies
definition 1: a religious belief or doctrine not in keeping with the established doctrine of a church, esp. the rejection of or dissent from any aspect of Roman Catholic Church dogma by a baptized church member.
The view that the sun rather than the earth might be the center of the universe was considered heresy by many in the seventeenth century.
definition 2: any opinion or belief that challenges deeply established social, academic, political, or religious views.
This notion that disease could be caused by microbes was heresy.
definition 3: adherence to such opinions or beliefs.
The astronomer Galileo was accused of heresy for his support of the heliocentric view of the universe.