almanac

Almanac comes from Middle English almenak, borrowed from Old French almanach, from Medieval Latin almanachus, which came from Andalusian Arabic al-manāḵ, meaning 'almanac' or 'calendar.' That Arabic word traces back to al-munāḵ, meaning 'climate.'

The word moved from Arabic into Medieval Latin, then into Old French, and finally into Middle English, carrying the sense of a calendar or almanac at each step.

Its root, al-munāḵ, meant 'climate,' linking the idea of tracking the sky and seasons to the very word for a yearly calendar.