Dictionary: Syllable-hyphenation interpuncts (dots) missing
You can install the old dictionary from your old OS X install disk.

Here's what I did with my Snow Leopard disk on my Mavericks installation:


Quit Dictionary
Turn ON hidden file visibility in Finder by typing this into Terminal:

defaults write com.apple.finder AppleShowAllFiles Yes

Rename /Library/Dictionaries/New Oxford American Dictionary.dictionary to something like  New Oxford American Dictionary-orig.dictionary, since you'll be putting the older OS X version of this dictionary here.
Grab the application Pacifist from http://www.charlessoft.com and run it
Pop in your old OS X Install disk to your DVD Drive
Find the dictionary package.  I found mine here:  

/Volumes/Mac OS X Install DVD/System/Installation/Packages/OxfordDictionaries.pkg

drag this package into Pacifist
Within Pacifist, find your dictionary folder named New Oxford American Dictionary.dictionary
Drag this folder into /Library/Dictionaries
Start up Dictionary
Optional: Go into preferences and enable/disable the dictionaries you want.  The just-copied dictionary is probably already enabled, since it has the same name as the original dictionary.  But you can also enable the original dictionary so that both are active.
You can turn off HIDDEN FILE view by typing into Terminal:

defaults write com.apple.finder AppleShowAllFiles No



Now, I have the syllables displayed on Mavericks!