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A unit of area traditionally defined as the area of a plot of land one chain (66 feet) by one furlong (660 feet), equivalent to 43,560 square feet (0.001563 sq mi; 4,047 m 2), or about 0.40 hectare. active volcano A volcano that is currently erupting, or one that has erupted within the last 10,000 years (the Holocene) or during recorded history ...
This is a list of geographic acronyms and initialisms. That is, it's a list of the names of cities, towns, lakes, and other geographic places that are derived from acronyms. Acronyms are abbreviations formed by the initial letter or letters of the words that make up a multi-word term. For the most part, the geographic names in this list were ...
The term is used primarily in the Slavic-speaking world. polynodal Many-centered; having many nodes. [5] polynya An area of unfrozen seawater surrounded by an otherwise contiguous area of pack ice or fast ice. Polynyas are often formed along polar coastlines through the action of katabatic winds, but may also form in the open ocean. pond
Administrative (all arms) Access control. Cantonment: a temporary or semi-permanent military quarters; in South Asia, the term cantonment also describes permanent military stations. Chief of defence. Cloak and Dagger. Combat information center. Command (military formation) Command center. Command and control.
Image comparing the hectare (the small blue area at lower left) to other units. The entire yellow square is one square mile.. The hectare (/ ˈ h ɛ k t ɛər,-t ɑːr /; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm 2), that is, 10,000 square meters (10,000 m 2), and is primarily used in the measurement of land.
AAA – Anti-aircraft artillery "Triple A". AAAV – Advanced Amphibious Assault Vehicle. AAC – Army Acquisition Corps. AAD – Armored amphibious dozer. AADC – Area air defense commander. AAE – Army acquisition executive. AAG – Anti-aircraft gun. AAK – Appliqué armor kit (US) AAL – Additional authorization list.
Area is the measure of a region 's size on a surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of a three-dimensional object. Area can be understood as the amount of material with a given thickness that would be necessary to ...
AFWA – Air Force Weather Agency. AG (TAG) – Adjutant General, (The) AGE – Aerospace Ground Equipment; analogous to Ground Support Equipment (GSE) in USN, USMC and USCG ( Naval Aviation) AGE Ranger – An AGE Technician. AGR – Active Guard and Reserve. AGS – Aircraft Generation Squadron. AGSM – Anti-G Straining Maneuver.