letter designation
21Eta (letter) — Eta (uppercase Eta;, lowercase eta;; el. Ήτα) is the seventh letter of the Greek alphabet. In the system of Greek numerals it has a value of 8. Letters that arose from Eta include the Latin H and the Cyrillic letter И. In Modern Greek the letter …
221922 United States Navy aircraft designation system — Until 1962, the United States Navy (and the United States Marine Corps) used a system to designate its aircraft that included information about a craft s role and its manufacturer.The SystemThe system conveyed its information in the… …
23Canuck Letter — The Canuck Letter (lettre des Canucks) est une fausse lettre à l’attention de l’éditeur du Manchester Union Leader, journal régional du New Hampshire, publiée le 24 février 1972, deux semaines avant l élection primaire démocrate dans cet État, au …
24work letter — USA In a leasing context, an agreement between the landlord and the tenant for the performance of the initial build out of the leased premises. Generally, a work letter includes: • Designation of the party responsibilities for the build out. •… …
25Chemical weapon designation — Chemical, biological, and radiological warfare agents are sometimes assigned what is termed a military symbol. Military symbols evolved out of the First World War from the British in part for secrecy, and to simplify reference to chemicals by… …
26Bayer designation — noun a stellar designation in which a specific star is identified by a Greek letter, followed by the genitive form of its parent constellations Latin name …
27drive letter — A designation used to specify a PC disk drive. For example, the first floppy disk drive is usually referred to as drive A, and the first hard disk drive is usually referred to as drive C …
28Astronomical naming conventions — In ancient times, only the Sun and Moon, a few hundred stars and the most easily visible planets had names. Over the last few hundred years, the number of identified astronomical objects has risen from hundreds to over a billion, and more are… …
29New York City Subway nomenclature — Signs for southbound ( Downtown Brooklyn ) and northbound ( Uptown The Bronx ) platforms New York City Subway nomenclature describes terminology used in the New York City Subway system as derived from railroading practice, historical origins of… …
30History of American football positions — American Football position names are based on the role the player normally has in the offense, rather than necessarily his position at the start of the play. Tight ends, for instance, usually line up to the outside of one of the offensive tackles …
