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spiny anteater
spiny cocklebur
spiny eel
spiny-headed worm
spiny lobster
spiny mouse
spiracle
spiraea
spiral
spiral binding
spiral galaxy
spiral of Archimedes
spiral staircase
spiran
spirant
spire (1)
spire (2)
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spiral

spi·ral [ sprəl ]


noun  (plural spi·rals)
Definition:
 
1. continuous circling flat curve: in mathematics, a flat curve or series of curves that constantly increase or decrease in size in circling around a central point

2. mathematics 
Same as  helix (sense 2)


3. something with curving circular pattern: something that has a helical or spiral form

4. aviation flight maneuver: a maneuver in which an aircraft makes a continuous banking turn as it descends

5. economics accelerating economic change: a continuously accelerating increase or decrease in prices, wages, or interest rates



adjective 
Definition:
 
1. continuously circling with flat curves: with a flat curve or series of curves that constantly increase or decrease in size in circling around a central point

2. helical: like a helix in shape



verb  (past and past participle spi·raled or spi·ralled, present participle spi·ral·ing or spi·ral·ling, 3rd person present singular spi·rals)
Definition:
 
1. transitive and intransitive verb move something in spiral: to move in a spiral, or make something move in a spiral

2. intransitive verb change at increasing pace: to increase or decrease at a continuously accelerating rate
spiraling inflation

3. transitive and intransitive verb shape something like spiral: to take on a spiral shape, or make something take on a spiral shape

[Mid-16th century. < medieval Latin spiralis "coiled" < Latin spira (see spire2)]

spi·ral·ly adverb
spi·roid [ sp royd ] adjective
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