All Acronyms. BLUF [Internet]; Jan 15, 2018 [cited 2018 Jan 15]. Available from: http://www.allacronyms.com/_Military/BLUF. MHRA 'BLUF', All Acronyms, 15 January 2018, <http://www.allacronyms.com/_Military/BLUF> [accessed 15 January 2018] Bluebook All Acronyms, BLUF (Jan. 15, 2018, 11:01 PM), available at http://www.allacronyms.com/_Military/BLUF. CSE All Acronyms. BLUF [Internet]; January 15, 2018 [cited 2018 JAN 15]. Available from: http://www.allacronyms.com/_Military/BLUF.
The noun PTOLEMY has 2 senses: 1. Alexandrian astronomer who proposed a geocentric system of astronomy that was undisputed until Copernicus (2nd century AD) 2. an ancient dynasty of Macedonian kings who ruled Egypt from 323 BC to 30 BC; founded by Ptolemy I and ended with Cleopatra. Familiarity information: PTOLEMY used as a noun is rare.
The geocentric model, also known as the Ptolemaic system, is a theory that was developed by philosophers in Ancient Greece and was named after the philosopher Claudius Ptolemy who lived circa 90 to 168 A.D. It was developed to explain how the planets, the Sun, and even the stars orbit around the Earth.