From Ogre Wiki

This section is designed to give you an overview of many of the terms used in relation to OGRE. If there is a term you're unfamiliar with, add it to the list below. If there's a term you know that is on this list, fill it in! Just add [[Category:OgreLexicon]] at the bottom of your article and it will show up here.

Todo

Feel free to describe some of this words.
Maybe the information is still in this wiki, in Ogre forum or on wikipedia.org. In this case you can just copy it. Links to internal wiki pages or to API pages can be added, too.

• Bones  |  emitter  |  affector
• Ray  |  PagedGeometry
• quad-tree + quad mesh (+ link from Experiences:Tibor)
• index buffer
• Shadow
• Intergration  |  DirectDraw
• LiSPSM  |  VSM  |  PSSM CSM
• Spline - also add this API link
• Renderqueue (or RenderQueue if this is a class name, too)  |  RenderWindow
• resource managers