1. 
   Principia
   (Latin) building for the administrative offices of a Roman fort; the principia could hold records, storerooms and the soldiers` pay.
   Found op http://ablemedia.com/ctcweb/glossary/glossaryi.html
   
   
2. 
   principia
   headquarters building of a Roman fort
   Found op http://www.digital-documents.co.uk/archi/glos_rom.htm
   
   
3. 
   principia
   The name for the central headquarters building in an army camp. In Republican times in temporary camps was connected with the praetorium, whereas later in permanent camps they were distinct buildings. The literal, administrative and religious centre of the later Roman forts, situated in the centre o...
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
4. 
   Principia
   HQ building.
   Found op http://www.encyclo.co.uk/local/20764
   
   
5. 
   principia
   headquarters building The literal, administrative and religious centre of the later Roman forts, situated in the centre of the latera praetorii, fronting onto the via principalis and facing down the length of the via praetoria, the building was thus visible as soon as one entered the porta praetoria...
   Found op http://www.roman-britain.org/military/military_glossary.htm
   
   
6. 
   Principia
   Prin·cip'i·a noun plural [ Latin principium . See Principle .] First principles; fundamental beginnings; elements; as. Newton's Principia .
   Found op http://www.encyclo.co.uk/webster/P/162
   
   
7. 
   Principia
   • (n. pl.) First principles; fundamental beginnings; elements; as. Newton`s Principia.
   Found op http://thinkexist.com/dictionary/meaning/principia/
   
   
8. 
   Principia
   [alga] Principia is a genus of alga that has been placed in the coralline stem group on the basis of it slightly-differentiated thallus; it forms an "intermediate" between Hortonella, Neoprincipia and Archaeolithophyllum.{ref doi|10.1016/S0016-6995(03)00060-3 }{reflist} ...
   Found op http://en.wikipedia.org/wiki/Principia_(alga)
   
   

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