A musical phrase constructed from one or more statements of a rhythmic mode pattern and ending in a rest
Big O notation in calculation of algorithm computational complexity
Ordo (palace) (Orda or Horde), is a nomadic palace for the Mongol aristocrats and the Turkic rulers
Order (biology), in the taxonomy of organisms
Ordo Recitandi: The Ordo gives complete details of the celebration of the Eucharist and the Liturgy of the Hours, beginning with the first Sunday of Advent
The Inquisition from Warhammer 40,000 has three main ordines:The Ordo Malleus,The Ordo Hereticus and The Ordo Xenos
Ordo Templi Orientis, an organization dedicated to the religious philosophy of Thelema
The scholarly economic/political science journal ORDO, The Annual Review of Economic and Social Order
Canderous Ordo, a fictional character in the Star Wars video games Star Wars: Knights of the Old Republic and Star Wars: Knights of the Old Republic II: The Sith Lords
A fictional encryption program from the book Cryptonomicon, by Neal Stephenson
Novus ordo seclorum which appears on the reverse of the Great Seal of the United States
Ordo Missae, the order (regulation) of the Eucharist in the Roman Rite of the Catholic Church
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ORDO — Jahrbuch für die Ordnung von Wirtschaft und Gesellschaft (English: The Ordo Yearbook of Economic and Social Order, most commonly referred to as Ordo Yearbook, or simply as ORDO) is a peer-reviewed academic journal established in 1948 by the German economists Walter Eucken and Franz Böhm. The journal focuses on the economic and political institutions governing modern society.