noun Etymology: Middle English ~e, 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) Date: 14th century any of several early medieval treatises on a branch of knowledge
ALMAGEST
Meaning of ALMAGEST in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012