English

Noun

parapegma ‎(plural parapegmas or parapegmata)

1. A device for keeping track of cyclical events, particularly of stars, weather, seasons, and so on.

• 2007, Daryn Lehoux, Astronomy, Weather, and Calendars in the Ancient World, page 12:

  At its most basic, the word parapegma (plural:parapegmata) describes any instrument that tracked cyclical phenomena by the use of a moveable peg or pegs.

Synonyms

• almanac