- spiral arm
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any of the elongated and curved spiral sections that are connected to the center of a spiral galaxy.[1910-15]
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Universalium. 2010.
spiral arm
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spiral arm — Astron. any of the elongated and curved spiral sections that are connected to the center of a spiral galaxy. [1910 15] * * * spiral arm noun An arm of a spiral galaxy • • • Main Entry: ↑spire … Useful english dictionary
spiral arm — noun A section of a spiral galaxy that coils out from the centre … Wiktionary
Spiral bound — is an active online mailing list and newsletter devoted to the discussion of 20th century authors that explored the limits of traditional narrative and structure, often coming from modernism, surrealism, magical realism, and postmodernism.… … Wikipedia
Spiral galaxy — A spiral galaxy is a galaxy belonging to one of the three main classes of galaxy originally described by Edwin Hubble in his 1936 work “The Realm of the Nebulae” [cite book |last=Hubble |first=E. P. |authorlink=Edwin Hubble |title=The Realm of… … Wikipedia
Spiral fracture — An x ray image of a spiral fracture to the left humerus of a 27 year old male. The injury was sustained during a fall. A spiral fracture (a.k.a. torsion fracture) is a bone fracture occurring when torque is applied along the axis of a bone.[1]… … Wikipedia
spiral — spi|ral1 [ spaırəl ] noun count * 1. ) a shape that looks like a set of circles inside each other, made by one line curving inside itself a ) a shape made by something that curves around a central line or post and along its length 2. ) a… … Usage of the words and phrases in modern English
Spiral Jetty — The Spiral Jetty , considered to be the central work of American sculptor Robert Smithson, is an earthwork sculpture constructed in 1970.Built of mud, salt crystals, basalt rocks, earth, and water on the northeastern shore of the Great Salt Lake… … Wikipedia
Arm — This article is about the upper part of the human upper limb. For other uses, see Arm (disambiguation). Arm The human arm … Wikipedia
spiral spring — Spring Spring, n. [AS. spring a fountain, a leap. See {Spring}, v. i.] 1. A leap; a bound; a jump. [1913 Webster] The prisoner, with a spring, from prison broke. Dryden. [1913 Webster] 2. A flying back; the resilience of a body recovering its… … The Collaborative International Dictionary of English
Spiral Staircase — Compact staircase often built into the walls of castles. Usually designed so that attackers climbing a clockwise staircase would find it hard to fight with their right hand, whilst descending defenders would have their right (sword) arm free … Medieval glossary
