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Spinstress
n.
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A woman who spins.
Spinstry
n.
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The business of one who spins; spinning.
Spinule
n.
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A minute spine.
Spinulescent
a.
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Having small spines; somewhat thorny.
Spinulose
a.
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Alt. of Spinulous
Spinulous
a.
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Covered with small spines.
Spiny
a.
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Full of spines; thorny; as, a spiny tree.
Spiny
a.
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Like a spine in shape; slender.
Spiny
a.
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Fig.: Abounding with difficulties or annoyances.
Spiny
n.
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See Spinny.
Spiodea
n. pl.
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An extensive division of marine Annelida, including those that are without oral tentacles or cirri, and have the gills, when present, mostly arranged along the sides of the body. They generally live in burrows or tubes.
Spirable
a.
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Capable of being breathed; respirable.
Spiracle
n.
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The nostril, or one of the nostrils, of whales, porpoises, and allied animals.
Spiracle
n.
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One of the external openings communicating with the air tubes or tracheae of insects, myriapods, and arachnids. They are variable in number, and are usually situated on the sides of the thorax and abdomen, a pair to a segment. These openings are usually elliptical, and capable of being closed. See Illust. under Coleoptera.
Spiracle
n.
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A tubular orifice communicating with the gill cavity of certain ganoid and all elasmobranch fishes. It is the modified first gill cleft.
Spiracle
n.
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Any small aperture or vent for air or other fluid.
Spiracular
a.
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Of or pertaining to a spiracle.
Spiraea
n.
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A genus of shrubs or perennial herbs including the meadowsweet and the hardhack.
Spiraeic
a.
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Of, pertaining to, or derived from, the meadowsweet (Spiraea); formerly, designating an acid which is now called salicylic acid.
Spiral
a.
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Winding or circling round a center or pole and gradually receding from it; as, the spiral curve of a watch spring.
Spiral
a.
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Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical.
Spiral
a.
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Of or pertaining to a spiral; like a spiral.
Spiral
a.
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A plane curve, not reentrant, described by a point, called the generatrix, moving along a straight line according to a mathematical law, while the line is revolving about a fixed point called the pole. Cf. Helix.
Spiral
a.
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Anything which has a spiral form, as a spiral shell.
Spirality
n.
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The quality or states of being spiral.
Spirally
adv.
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In a spiral form, manner, or direction.
Spiralozooid
n.
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One of the special defensive zooids of certain hydroids. They have the form of long, slender tentacles, and bear lasso cells.
Spirant
n.
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A term used differently by different authorities; -- by some as equivalent to fricative, -- that is, as including all the continuous consonants, except the nasals m, n, ng; with the further exception, by others, of the liquids r, l, and the semivowels w, y; by others limited to f, v, th surd and sonant, and the sound of German ch, -- thus excluding the sibilants, as well as the nasals, liquids, and semivowels. See Guide to Pronunciation, // 197-208.
Spiranthy
n.
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The occasional twisted growth of the parts of a flower.
Spiration
n.
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The act of breathing.