Meaning of summa

sum•ma

Pronunciation: (soom'u, sum'u), [key]
— pl. sum•mae sum•mas.
  1. a comprehensive work or series of works covering, synthesizing, or summarizing a particular field or subject.
  2. a work or series of works that is a summary of all human knowledge.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.