Definition of Almagest in English:

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Pronunciation: /ˈalmədʒɛst/


(the Almagest)
1An influential treatise on astronomy written by the Greek astronomer and geographer Ptolemy in the second century ad.
Example sentences
  • Finally, the translation of Ptolemy's Almagest furnished important astronomical material.
  • But once they had translated Ptolemy's Almagest, they developed astronomy so quickly that their mark is found at every step.
  • Menelaus's work formed the basis for Ptolemy's numerical solutions of spherical astronomy problems in the Almagest.


Late Middle English: from Old French almageste, based on Arabic, from al 'the' + Greek megistē 'greatest (composition)'.

For editors and proofreaders

Line breaks: Al¦ma|gest

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