Mid 16th century (as an adjective): from medieval Latin spiralis, from Latin spira ‘coil’ (see Winding in a continuous and gradually widening (or tightening) curve, either round a central point on a flat plane or about an axis so as to form a cone.Winding in a continuous curve of constant diameter about a central axis, as though along a cylinder; helical., helical, helix-shaped, corkscrew, curling, winding, twisting, whorled, scrolled(of a stairway) constantly turning in one direction as it rises, round a solid or open centre.

spiral (plural spirals) ( geometry ) A curve that is the locus of a point that rotates about a fixed point while continuously increasing its distance from that point.

All rights reserved.THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. always used before a noun: winding or circling around a central point and usually getting closer to or farther away from it: shaped or moving like a spiral. 2. a helix. 1. 3. a single circle or ring of a spiral or helical curve or object. (of a fracture) curving round a long bone lengthwise., helix, curl, corkscrew, twist, gyre, whorl, scroll, curlicue, convolutionA progressive rise or fall of prices, wages, etc., each responding to an upward or downward stimulus provided by a previous one., rise, enlargement, expansion, extension, multiplication, elevation, swelling, inflationA process of deterioration through the continuous increase or decrease of a specified feature., wind, twirl, swirl, twist, wreathe, snake, gyrateCause to have a spiral shape or follow a spiral course., wind, twirl, swirl, twist, wreathe, snake, gyrate, shoot up, rocket, increase rapidly, rise rapidly, leap up, escalate, climb, mountThese Foreign Words And Phrases Are Now Used In EnglishDoes English Have More Words Than Any Other Language?Are You Learning English?

spiral meaning: 1. a shape made up of curves, each one above or wider than the one before: 2. a situation in which….

Definition of spiral cleavage : holoblastic cleavage that is typical of protostomes and that is characterized by arrangement of the blastomeres of each upper tier over the cell junctions of the next lower tier so that the blastomeres spiral around the pole to pole axis of the embryo — compare radial cleavage First Known Use of spiral cleavage Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. A three-dimensional curve that turns around an axis at a constant or continuously varying distance while moving parallel to the axis; a helix. A software project repeatedly passes through these phases in iterations (called Spirals in this model). c : spiral-bound a spiral notebook. ral (spī′rəl) n. 1. a. Copyright © 2018 by LoveToKnow CorpWebster's New World College Dictionary, Fifth Edition Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company.

Delivered to your inbox! 4. a spiral or helical object, formation, or form.

Learn more. (adjective) The @ sign is an example of something that might be described as a spiral. ‘The spiral pattern is sufficiently regular that it leads to a numerical parameter characteristic for the species, called its divergence.’ ‘When the solution is placed as a thin film under stationary conditions, concentric or spiral wave patterns develop in the solution.’

Synonym (s): helical computed tomography, helical CT, spiral CT Bon Appétit!Which of the following Words of the Day means “a literary or rhetorical device that appeals to or invokes the reader’s or listener’s emotions through the repetition of words in quick succession”?Dictionary.com Unabridged

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