Dictionary.app vanished! After Snow Leopard

FIRST:
MY System

Software Overview:
  System Version:      Mac OS X 10.6.1 Snow Leopard
  Kernel Version:      Darwin 9.5.0
  Boot Volume:      Macintosh HD
  Boot Mode:      Normal

Hardware Overview:
  Model Name:      iMac
  Model Identifier:      iMac8,1
  Processor Name:      Intel Core 2 Duo
  Processor Speed:      3.06 GHz
  Number Of Processors:      1
  Total Number Of Cores:      2
  L2 Cache:      6 MB
  Memory:      4 GB
  Bus Speed:      1.07 GHz
  Boot ROM Version:      IM81.00C1.B00
  SMC Version:      1.30f1

MY VIDEO CARD:

NVIDIA GeForce 8800 GS:

  Chipset Model:      NVIDIA GeForce 8800 GS
  Type:      Display
  Bus:      PCIe
  PCIe Lane Width:      x16
  VRAM (Total):      512 MB
  Vendor:      NVIDIA (0x10de)
  Device ID:      0x0609
  Revision ID:      0x00a2
  ROM Revision:      3234
  Displays:
iMac:
  Resolution:      1920 x 1200
  Depth:      32-bit Color
  Core Image:      Hardware Accelerated
  Main Display:      Yes
  Mirror:      Off
  Online:      Yes
  Quartz Extreme:      Supported
  Built-In:      Yes
Display Connector:
  Status:      No display connected

MY PROBLEM:

HEY, I upgraded OS X to Snow Leopaard a couple of weeks ago. And suddenly today when I went to my dock to open dictionary.app I got an error message back saying that my version of dictionary.app can not be used with Snow Leopard.
I've scoured Apple.com for an updated dictionary.app, but found NOTHING.
What gives?
How can I get my dictionary back.
When I do  spotlight search for the app - thinking that maybe it's just lost somwhere on the HD -  spotlight does not find dictionary.app - except for the install that OS X says I can not use, which will not run.
Any ideas out there?