Almagest

[ al-muh-jest ]

/ ˈæl məˌdʒɛst /

(italics) a Greek work on astronomy by Ptolemy.

(lowercase) any of various medieval works of a like kind, as on astrology or alchemy.

Origin of Almagest

1350–1400; Middle English almageste < Middle French < Arabic al the + majisṭī < Greek megístē ( sýntaxis) greatest (composition)

The most noted of all the writings of Ptolemy is the work which became famous under the Arabic name of Almagest.

A History of Science, Volume 1(of 5) |Henry Smith Williams
Tables of mean motions of the Sun are given in Ptolemy's Almagest, lib.

Chaucer's Works, Volume 3 (of 7) |Geoffrey Chaucer
His catalogue contained 1,080 stars, and is printed in the "Almagest" of Ptolemy.

Astronomy |David Todd
The reference is right, for the 'motus celi' are discussed in the Almagest, lib.

Chaucer's Works, Volume 3 (of 7) |Geoffrey Chaucer

One of his treatises has come down to us; but his principal discoveries have been transmitted through the 'Almagest' of Ptolemy.

Letters on Astronomy |Denison Olmsted

Almagest

/ (ˈælməˌdʒɛst) /

a work on astronomy compiled by Ptolemy in the 2nd century a.d containing a description of the geocentric system of the universe and a star catalogue

(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)