Definition of compendium in English:
noun (plural compendiums or compendia /-dēə/)
1A collection of concise but detailed information about a particular subject, especially in a book or other publication.
- The Skeptic's Dictionary is a compendium of detailed information about oft-repeated hoaxes, legends and quackery.
- This book is a compendium of information on plants that are, or could be, useful to humans.
- Overall, I found the book to be an impressive compendium of useful information and resources.
late 16th century: from Latin, 'profit, saving' (literally 'what is weighed together'), from compendere, from com- 'together' + pendere 'weigh'.