Found 2 items, similar to Magnetic storm.
English → English (WordNet) Definition: magnetic storm magnetic storm n : a sudden disturbance of the earth's magnetic field; caused by emission of particles from the sun
English → English (gcide) Definition: Magnetic storm Magnetic \Mag*net"ic\, Magnetical \Mag*net"ic*al\, a. [L. magneticus: cf. F. magn['e]tique.] 1. Pertaining to the magnet; possessing the properties of the magnet, or corresponding properties; as, a magnetic bar of iron; a magnetic needle. [1913 Webster] 2. Of or pertaining to, or characterized by, the earth's magnetism; as, the magnetic north; the magnetic meridian. [1913 Webster] 3. Capable of becoming a magnet; susceptible to magnetism; as, the magnetic metals. [1913 Webster] 4. Endowed with extraordinary personal power to excite the feelings and to win the affections; attractive; inducing attachment. [1913 Webster] She that had all magnetic force alone. --Donne. [1913 Webster] 5. Having, susceptible to, or induced by, animal magnetism, so called; hypnotic; as, a magnetic sleep. See Magnetism. [Archaic] [1913 Webster +PJC] Magnetic amplitude, attraction, dip, induction, etc. See under Amplitude, Attraction, etc. Magnetic battery, a combination of bar or horseshoe magnets with the like poles adjacent, so as to act together with great power. Magnetic compensator, a contrivance connected with a ship's compass for compensating or neutralizing the effect of the iron of the ship upon the needle. Magnetic curves, curves indicating lines of magnetic force, as in the arrangement of iron filings between the poles of a powerful magnet. Magnetic elements. (a) (Chem. Physics) Those elements, as iron, nickel, cobalt, chromium, manganese, etc., which are capable or becoming magnetic. (b) (Physics) In respect to terrestrial magnetism, the declination, inclination, and intensity. (c) See under Element. Magnetic fluid, the hypothetical fluid whose existence was formerly assumed in the explanations of the phenomena of magnetism; -- no longer considered a meaningful concept. Magnetic iron, or Magnetic iron ore. (Min.) Same as Magnetite. Magnetic needle, a slender bar of steel, magnetized and suspended at its center on a sharp-pointed pivot, or by a delicate fiber, so that it may take freely the direction of the magnetic meridian. It constitutes the essential part of a compass, such as the mariner's and the surveyor's. Magnetic poles, the two points in the opposite polar regions of the earth at which the direction of the dipping needle is vertical. Magnetic pyrites. See Pyrrhotite. Magnetic storm (Terrestrial Physics), a disturbance of the earth's magnetic force characterized by great and sudden changes. Magnetic telegraph, a telegraph acting by means of a magnet. See Telegraph. [1913 Webster] Storm \Storm\, n. [AS. storm; akin to D. storm, G. sturm, Icel. stormr; and perhaps to Gr. ? assault, onset, Skr. s? to flow, to hasten, or perhaps to L. sternere to strew, prostrate (cf. Stratum). [root]166.] 1. A violent disturbance of the atmosphere, attended by wind, rain, snow, hail, or thunder and lightning; hence, often, a heavy fall of rain, snow, or hail, whether accompanied with wind or not. [1913 Webster] We hear this fearful tempest sing, Yet seek no shelter to avoid the storm. --Shak. [1913 Webster] 2. A violent agitation of human society; a civil, political, or domestic commotion; sedition, insurrection, or war; violent outbreak; clamor; tumult. [1913 Webster] I will stir up in England some black storm. --Shak. [1913 Webster] Her sister Began to scold and raise up such a storm. --Shak. [1913 Webster] 3. A heavy shower or fall, any adverse outburst of tumultuous force; violence. [1913 Webster] A brave man struggling in the storms of fate. --Pope. [1913 Webster] 4. (Mil.) A violent assault on a fortified place; a furious attempt of troops to enter and take a fortified place by scaling the walls, forcing the gates, or the like. [1913 Webster] Note: Storm is often used in the formation of self-explained compounds; as, storm-presaging, stormproof, storm-tossed, and the like. [1913 Webster] Anticyclonic storm (Meteor.), a storm characterized by a central area of high atmospheric pressure, and having a system of winds blowing spirally outward in a direction contrary to that cyclonic storms. It is attended by low temperature, dry air, infrequent precipitation, and often by clear sky. Called also high-area storm, anticyclone. When attended by high winds, snow, and freezing temperatures such storms have various local names, as blizzard, wet norther, purga, buran, etc. Cyclonic storm. (Meteor.) A cyclone, or low-area storm. See Cyclone, above. Magnetic storm. See under Magnetic. Storm-and-stress period [a translation of G. sturm und drang periode], a designation given to the literary agitation and revolutionary development in Germany under the lead of Goethe and Schiller in the latter part of the 18th century. Storm center (Meteorol.), the center of the area covered by a storm, especially by a storm of large extent. Storm door (Arch.), an extra outside door to prevent the entrance of wind, cold, rain, etc.; -- usually removed in summer. Storm path (Meteorol.), the course over which a storm, or storm center, travels. Storm petrel. (Zo["o]l.) See Stormy petrel, under Petrel. Storm sail (Naut.), any one of a number of strong, heavy sails that are bent and set in stormy weather. Storm scud. See the Note under Cloud. [1913 Webster] Syn: Tempest; violence; agitation; calamity. Usage: Storm, Tempest. Storm is violent agitation, a commotion of the elements by wind, etc., but not necessarily implying the fall of anything from the clouds. Hence, to call a mere fall or rain without wind a storm is a departure from the true sense of the word. A tempest is a sudden and violent storm, such as those common on the coast of Italy, where the term originated, and is usually attended by a heavy rain, with lightning and thunder. [1913 Webster] Storms beat, and rolls the main; O! beat those storms, and roll the seas, in vain. --Pope. [1913 Webster] What at first was called a gust, the same Hath now a storm's, anon a tempest's name. --Donne. [1913 Webster]