almagest

noun
al·​ma·​gest | \ ˈal-mə-ˌjest How to pronounce almagest (audio) \

Definition of almagest

: any of several early medieval treatises on a branch of knowledge

First Known Use of almagest

14th century, in the meaning defined above

History and Etymology for almagest

Middle English almageste, from Anglo-French & Medieval Latin, from Arabic al-majusti, the Arabic version of Ptolemy's astronomy treatise, from al the + Greek megistē (syntaxis), literally, greatest (composition)

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