Definition of "vampirism" []

• Belief in vampires. (noun)
• The behavior of a vampire. (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.

• "His vampires cannot stand sunlight (demonstrated in a spectacular sequence), vampirism is an infestation spread by vampire bite, and in particular, vampires need to be invited in to households – the film draws its central theme (and title) from this notion of “letting someone in”."
• "It was a movie that was filmed in black and white about an existential philosophy student who becomes a vampire, except vampirism is treated like heroin addiction."
• "Here, vampirism is a known condition but the law has yet to catch up with the issues that they bring forth."