(redirected from The Almagest)
Also found in: Encyclopedia.
Related to The Almagest: Ptolemy


1. A comprehensive treatise on astronomy, geography, and mathematics compiled by Ptolemy about ad 150.
2. almagest Any of several medieval treatises concerned with astronomy or alchemy.

[Middle English almageste, from Old French, from Arabic al-majisti : al-, the + Greek megistē (suntaxis), greatest (composition), feminine of megistos, greatest, superlative of megas, great; see meg- in Indo-European roots.]


1. (Astronomy) a work on astronomy compiled by Ptolemy in the 2nd century ad containing a description of the geocentric system of the universe and a star catalogue
2. (Historical Terms) (sometimes not capital) any of various similar medieval treatises on astrology, astronomy, or alchemy
[C14: from Old French, from Arabic al-majisti, from al the + majisti, from Greek megistē greatest (treatise)]


(ˈæl məˌdʒɛst)

1. (italics) a Greek work on astronomy and mathematics by Ptolemy.
2. (l.c.) any of various similar treatises by medieval writers.
[1350–1400; Middle English almageste < Middle French < Arabic al the + majisṭī < Greek megístē (sýntaxis) greatest (composition)]
Mentioned in ?
References in periodicals archive ?
com/scientists-create-powerful-muscle-fibre-fishing-line-sewing-thread/10418) The Almagest quoted Professor John Madden, University of British Columbia Electrical and Computer Engineering.
1114 Gherardo of Cremona born; translated the Almagest and the Toletan Tables into Latin.
The Almagest is a complete and detailed exposition of mathematical astronomy, one of the most important scientific treaties not only for its theories and technical and practical observations, but also for its influence in the future development of astronomy and the West and the Islamic world will both be influenced and transformed by this work.
Only in his Exposition of Almagest does al-Tusi note concerning the dioptra described in the Almagest that "it is possible that errors will occur [in the calculation of the apparent diameter] if the length of the rule is much longer than the width of the sight.
Claudius Ptolemy is rightly remembered for his scientific contributions, and his Mathematical Composition--hereafter referred to by its more common title, the Almagest, from its Latinized Arabic moniker--stands as one of the most influential texts in the history of science.
Ptolemy says in the first book of the Almagest that man ought not to satisfy his mind with probabilities and opinions, because these do not bring about stable concepts in the mind, but only be satisfied with demonstrated and certain things which certify and establish understanding because they are certain and eternally stable.
The maps show the stars of the 48 constellations, based on Ptolemy's Second Century star catalogue, The Almagest.
The Almagest included the equivalent of a table of sine values.
Among specific topics are between the Almagest and the Revolutions, the poetics of reflection in Virginia Woolf's short fiction, a phenomenological view of macrosynecdoche, the salience of incongruities in humorous texts and their resolution, image schemas as a way to analyze words and images with examples from William Blake and a Buddhist text, and the case of a curious quixotic Descuido and the role of translative texts.
The Almagest of Claudius Ptolemy was the dominant work in astronomy for over a thousand years until the publication of Copernicus's De revolutionibus in 1543.
Ptolemy, author of the Almagest, is relevant here for his Geography, a book that includes instructions on how to represent a three-dimensional world on a flat surface: a map.
These were considerations taken up in the Almagest that led to Ptolemy's modifications of the epicyclic models of his predecessors, namely to the creation of the eccentric and equant models of the planets.