Meanings and Pronunciations--Occlumency, Legilimency, Wizengamot

[schlamom]

No: HPFGUIDX 67245

I think the word "Occlumency" must come from "occlude" (to block), 
but does anyone have an idea where JKR came up with "Legilimency"?  
And is there any significance to the name of the High Court being 
name "Wizengamot"?  That sounds like a Germanic word to me.  And how 
are these made up word supposed to be pronounced?  I've been 
pronouncing Occlumency as oc-CLU-men-cy, and Wizengamot as wi-ZEN-ga-
mot.  

Any ideas?

Cavviemom