[f. SPIRAL a.1]

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  1.  In a spiral manner; in spiral lines or curves.

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a. 1608.  Dee, Relat. Spir., I. (1659), 52. The bonds seem of a smoky ashy collour, spirally going about the cloud.

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1691.  Ray, Creation, II. (1692), 48. The Heart … being a Muscular Part, the sides of it are composed of two orders of Fibres running circularly or spirally from Base to Tip.

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1769.  Falconer, Dict. Marine, s.v. Engagement, The barrel … is rifled spirally.

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1799.  G. Smith, Laboratory, 312. Let pieces of milled lead be rolled spirally.

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1822.  J. Parkinson, Outl. Oryctol., 210. A canal passing spirally up its sides.

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1845.  J. Coulter, Adv. in Pacific, vii. 75. They … cut the blubber the proper breadth spirally from the base of the head to the flukes.

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1885.  Mag. of Art, Sept., 458/1. The coils all joined together and running parallel to each other, instead of spirally.

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  2.  Comb., as spirally-arranged, -coiled, etc.

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1815.  Kirby & Sp., Entomol. (1818), I. 62. Two spirally-convoluted tubes were filled with a silky gum. Ibid. (1816), II. 423. Two minute oval sacs formed of an elastic spirally-wound fibre.

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1822.  J. Parkinson, Outl. Oryctol., 198. Two spirally-coiled tubular appendages nearly filling the shell.

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1870.  Rolleston, Anim. Life, 131. The mucous membrane … is prolonged into spirally-arranged valvular folds.

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1882.  Vines, trans. Sachs’ Bot., 639. The concave side of the long spirally-curved vegetative cone.

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