Necrophobia is the irrational fear of corpses, not just those of people but animals as well. Also included in this fear are the people, objects and ceremonies associated with death such as undertakers, morticians, coffins, tombstones, cemeteries and funerals. In a another way necrophobia could also be used to mean a fear of the dead by a cultural group, that their spirits will return to haunt the living, causing them harm in some way.
In some cultures necrophobia would be totally alien as the dead are welcome among the living.
Used to describe one who is deathly afraid of death, dead bodies (animated or otherwise), and/or other objects relating to death ie: coffins, tombstones, scythes, etc.
Goth dude: Holy sh#t its a corpse!
Necrophobic dude: Aaaaah! I'm necrophobic! *dies*
Goth dude: Holy sh#t its TWO corpses!
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).