Hermione

[Dale Coye]

The traditional, anglicized pronunciation of this name is four syllables /her
MY uh nee/  but when you say it fast, the schwa (3rd syllable) can get lost.
 In some words of this type the schwa after stressed vowel is lost for
good--compare diamond, diaper, which for me and millions of other Americans
are two-syllables  but historically, and (even today for some) have a middle
syllable-schwa.

Dale Coye
The College of NJ.