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Helix   Listen
noun
Helix  n.  (pl. L. helices, E. helixes)  
1.
(Geom.) A nonplane curve whose tangents are all equally inclined to a given plane. The common helix is the curve formed by the thread of the ordinary screw. It is distinguished from the spiral, all the convolutions of which are in the plane.
2.
(Arch.) A caulicule or little volute under the abacus of the Corinthian capital.
3.
(Anat.) The incurved margin or rim of the external ear.
4.
(Zool.) A genus of land snails, including a large number of species. Note: The genus originally included nearly all shells, but is now greatly restricted. See Snail, Pulmonifera.






Collaborative International Dictionary of English 0.48








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"Helix" Quotes from Famous Books



... You see this bent glass tube surrounded by the helix? That tube contains liquid carbon. I pass through the helix a current of induced electricity, generated by the action of these sixty Bunsen cups upon a succession of coils with carbon cores, and the magnet becomes charged with soulless life. I reverse the stream—what ...
— Stories by American Authors, Volume 8 • Various

... Univalves such as are now proper to rivers and lakes, together with the shells of true Land-snails. Amongst these may be mentioned numerous species of Limnoea (fig. 220), Physa (fig. 221), Melania, Paludina, Planorbis, Helix, ...
— The Ancient Life History of the Earth • Henry Alleyne Nicholson

... breakages producing two induction sparks that exactly limit the length to be taken in order to measure the time upon the tracing of the chronoscope tuning-fork; an absolute galvanometer; a bifilar galvanometer (Fig. 8) for absolute measurements, in which the helix is carried by two vertical steel wires stretched from o to u, and which is rendered complete by a mirror for the reading, and a second and fixed helix, so that an electro-dynamometer may be made of it; and, finally, a galvanometer for strong currents, having a horseshoe magnet ...
— Scientific American Supplement, No. 421, January 26, 1884 • Various

... along University, slowing for East San Diego where there were officers with bad reputations among speeders, through La Mesa, the cross on Mt. Helix showing faintly in the pale moonlight, through El Capon, out beyond Flynn Springs where the pavement ...
— Eve to the Rescue • Ethel Hueston

... same time, or in 1835, the attention of Mr. F.P. Smith seems to have been drawn to the subject of the screw-propeller, and we find him taking out a patent for his form, consisting of an elongated helix or spiral of several turns, under date of May 31, 1836. Ericsson's patent followed some six weeks later, or on July 13, 1836. While it thus appears that Ericsson had been studying the problem since 1833 or earlier, according to his own statements, there ...
— Beacon Lights of History, Volume XIV • John Lord

... declared, like a chameleon—that night saw it safely in the spirit-tin. They were loaded with juniper boughs, and fortunately they had not forgotten the berries; the latter establish the identity of the tree with the common Asiatic species. M. Lacaze brought back several Alpine plants, a small Helix which he had found near the summit, and copious scrawls for future croquis—his studies of the "Pins" and the "Dome" were ...
— The Land of Midian, Vol. 2 • Richard Burton

... current from a pile, P, traverses all these disks, through the connections that we have just mentioned, and passes through the primary helix (through the wire, I) of an induction coil H H' (Fig. 2), located beneath the apparatus, and if the secondary current from this bobbin corresponds, through the wire I, with a telephone line in which there is interposed a telephone or a speaking condenser, ...
— Scientific American Supplement, No. 312, December 24, 1881 • Various



Words linked to "Helix" :   coil, structure, family Helicidae, Helicidae, helix angle, Helix pomatia, spiral, construction, curved shape, whorl, curve, Hedera helix, genus Helix, Helix hortensis, garden snail, brown snail, edible snail



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