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Meaning of Almagest

Al•ma•gest

Pronunciation: (al'mu-jest"), [key]
— n.
  1. (italics) a Greek work on astronomy by Ptolemy.
  2. (l.c.) any of various medieval works of a like kind, as on astrology or alchemy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.