al·ma·nac (ôl?m?-n?k?, ?l?-)n.1. An annual publication including calendars with weather forecasts, astronomical information, tide tables, and other related tabular information.2. A usually annual reference book composed of various lists, tables, and often brief articles relating to a particular field or many general fields.[Middle English almenak, from Medieval Latin almanach, from medieval scientific Arabic al-man??, the calendar : Arabic al-, the + medieval scientific Arabic man??, calendar (variant of Arabic mun??, halting place, caravan stop (probably applied metaphorically to the position of celestial bodies), abode, from ‘an??a, to make (a camel) lie down, from n??a, to lie down, rest; see nw? in Semitic roots).]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.almanac (???lm??næk) na yearly calendar giving statistical information on events and phenomena, such as the phases of the moon, times of sunrise and sunset, tides, anniversaries, etc. Also (archaic): almanack [C14: from Medieval Latin almanachus, perhaps from Late Greek almenikhiaka]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014al?ma?nac (??l m??næk) n. 1. an annual publication containing a calendar for the coming year, important dates, and the times of such phenomena as sunrises and sunsets, phases of the moon, and tides. 2. a publication containing astronomical or meteorological information, as future positions of celestial objects, star magnitudes, and culmination dates of constellations. 3. an annual reference book of facts about countries, sports, entertainment, etc. [1350?1400; Middle English almenak