from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. That feeds on blood; blood-sucking, hematophagous
from the GNU version of the Collaborative International Dictionary of English
- adj. Subsisting upon blood; -- said of certain blood-sucking bats and other animals. See vampire.
from The Century Dictionary and Cyclopedia
- Feeding on blood; sanguisugent, as a bat: specifically noting the true vampires or blood-sucking bats. Also sanguinivorous.
Sorry, no etymologies found.
“While vampire bats are sanguivorous, they usually feed on the blood of cattle, horses, pigs,” he mused, adding two more balls of fire to the one already leaping between the fingers of his right hand.
I'm not sure what kind of chemistry is involved to make it work, for all I know there's some kind of magic pixie dust that wards off sanguivorous creepies.