almagest Meaning, Definition & Usage

Al"ma*gest noun
Etymology
F. almageste, LL. almageste, Ar. al-majisti, fr. Gr. (sc. ), the greatest composition.
Definitions
  1. The celebrated work of Ptolemy of Alexandria, which contains nearly all that is known of the astronomical observations and theories of the ancients. The name was extended to other similar works.

Webster 1913