- The definition of a compendium is a short summary with all the necessary information.
An example of a compendium is someone leaving a list of their pet's needs for a pet sitter.
nounpl. com·pen·di·ums or com·pen·di·a
- A short but complete summary of something.
- A list or collection of various items.
Origin of compendiumLatin, a shortening, from compendere, to weigh together : com-, com- + pendere, to weigh; see (s)pen- in Indo-European roots.
(plural compendiums or compendia)