Definition of Spiral shell. Meaning of Spiral shell. Synonyms of Spiral shell

Here you will find one or more explanations in English for the word Spiral shell. Also in the bottom left of the page several parts of wikipedia pages related to the word Spiral shell and, of course, Spiral shell synonyms and on the right images related to the word Spiral shell.

Definition of Spiral shell

Spiral shell
Spiral Spi"ral, a. [Cf. F. spiral. See Spire a winding line.] 1. Winding or circling round a center or pole and gradually receding from it; as, the spiral curve of a watch spring. 2. Winding round a cylinder or imaginary axis, and at the same time rising or advancing forward; winding like the thread of a screw; helical. 3. (Geom.) Of or pertaining to a spiral; like a spiral. Spiral gear, or Spiral wheel (Mach.), a gear resembling in general a spur gear, but having its teeth cut at an angle with its axis, or so that they form small portions of screws or spirals. Spiral gearing, a kind of gearing sometimes used in light machinery, in which spiral gears, instead of bevel gears, are used to transmit motion between shafts that are not parallel. Spiral operculum, an operculum whih has spiral lines of growth. Spiral shell, any shell in which the whorls form a spiral or helix. Spiral spring. See the Note under Spring, n., 4.

Meaning of Spiral shell from wikipedia

- A seas**** or sea s****, also known simply as a s****, is a hard, protective outer layer usually created by an animal or organism that lives in the sea...
- or other s****. Most gastropod s**** are spirally coiled. The majority (over 90%) of gastropod species have dextral (right-handed) s****, but a small...
- In geometry, a golden spiral is a logarithmic spiral whose growth factor is φ, the golden ratio. That is, a golden spiral gets wider (or further from...
- word for snail s****, which in turn is from the Ancient Gr**** κοχλίας kokhlias ("snail, ****"), and from κόχλος kokhlos ("spiral s****") in reference...
- this term is often used for the lion-shaped door knockers instead of spiral s****-shaped knockers. As seen in the table, some names are ****igned to different...
- Archimedean spiral hyperbolic spiral Fermat's spiral lituus logarithmic spiral Cornu spiral spiral of Theodorus Fibonacci Spiral (golden spiral) The involute...
- this method is not yet practical. From the Gr**** kochlias (snail with a spiral s****) + myia (fly) and the Latin hominis (man) + vorax (consuming), Cochliomyia...
- the spiral or whorled growth of a mollusc s****. A spiral configuration of the s**** is found in numerous gastropods, but it is also found in s****ed cephalopods...
- (peanut s****)-shaped structures which typically have a maximum visibility at half the length of the in-plane bar. The bulk of the stars in a spiral galaxy...
- films and similar structures such as cells; the logarithmic spiral as seen in mollusc s**** and ruminant horns; the arrangement of leaves and other plant...