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Reference.org
Compendium
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<p>A compendium (pl. compendia or compendiums) is a comprehensive collection of information and analysis pertaining to a <a href="/facts/Body_of_knowledge/zrrBddAR">body of knowledge</a>. A compendium may concisely summarize a larger work. In most cases, the body of knowledge will concern a specific field of human interest or endeavour (for example: <a href="/facts/Hydrogeology/4HEanFa0">hydrogeology</a>, <a href="/facts/Logology_(science)/7plUGmlq">logology</a>, <a href="/facts/Ichthyology/S2MCul1h">ichthyology</a>, <a href="/facts/Phytosociology/3vMM5UQl">phytosociology</a> or <a href="/facts/Myrmecology/EVoKUlhm">myrmecology</a>), while a general <a href="/facts/Encyclopedia/fRsmb4q6">encyclopedia</a> can be referred to as a "compendium of all human knowledge". </p><p>The word <i>compendium</i> arrives from the Latin word <i>compeneri</i>, meaning "to weigh together or balance". The 21st century has seen the rise of democratized, online compendia in various fields. </p>