Mag·ni·tude n.
 1. Extent of dimensions; size; -- applied to things that have length, breadth, and thickness.
    Conceive those particles of bodies to be so disposed amongst themselves, that the intervals of empty spaces between them may be equal in magnitude to them all.   --Sir I. Newton.
 2. Geom. That which has one or more of the three dimensions, length, breadth, and thickness.
 3. Anything of which greater or less can be predicated, as time, weight, force, and the like.
 4. Greatness; grandeur. “With plain, heroic magnitude of mind.”
 5. Greatness, in reference to influence or effect; importance; as, an affair of magnitude.
    The magnitude of his designs.   --Bp. Horsley.
 Apparent magnitude
 1. Opt., the angular breadth of an object viewed as measured by the angle which it subtends at the eye of the observer; -- called also apparent diameter. 2. Astron. Same as magnitude of a star, below.
 Magnitude of a star Astron., the rank of a star with respect to brightness. About twenty very bright stars are said to be of first magnitude, the stars of the sixth magnitude being just visible to the naked eye; called also visual magnitude, apparent magnitude, and simply magnitude.  Stars observable only in the telescope are classified down to below the twelfth magnitude.  The difference in actual brightness between magnitudes is now specified as a factor of 2.512, i.e. the difference in brightness is 100 for stars differing by five magnitudes.
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 Star n.
 1. One of the innumerable luminous bodies seen in the heavens; any heavenly body other than the sun, moon, comets, and nebulae.
 His eyen twinkled in his head aright,
 As do the stars in the frosty night.   --Chaucer.
 Note: ☞ The stars are distinguished as planets, and fixed stars. See Planet, Fixed stars under Fixed, and Magnitude of a star under Magnitude.
 2. The polestar; the north star.
 3. Astrol. A planet supposed to influence one's destiny; (usually pl.) a configuration of the planets, supposed to influence fortune.
    O malignant and ill-brooding stars.   --Shak.
    Blesses his stars, and thinks it luxury.   --Addison.
 4. That which resembles the figure of a star, as an ornament worn on the breast to indicate rank or honor.
 On whom . . .
 Lavish Honor showered all her stars.   --Tennyson.
 5. Specifically, a radiated mark in writing or printing; an asterisk [thus, *]; -- used as a reference to a note, or to fill a blank where something is omitted, etc.
 6. Pyrotechny A composition of combustible matter used in the heading of rockets, in mines, etc., which, exploding in the air, presents a starlike appearance.
 7. A person of brilliant and attractive qualities, especially on public occasions, as a distinguished orator, a leading theatrical performer, etc.
 Note: ☞ Star is used in the formation of compound words generally of obvious signification; as, star-aspiring, star-bespangled, star-bestudded, star-blasting, star-bright, star-crowned, star-directed, star-eyed, star-headed, star-paved, star-roofed, star-sprinkled, star-wreathed.
 Blazing star, Double star, Multiple star, Shooting star, etc. See under Blazing, Double, etc.
 Nebulous star Astron., a small well-defined circular nebula, having a bright nucleus at its center like a star.
 Star anise Bot., any plant of the genus Illicium; -- so called from its star-shaped capsules.
 Star apple Bot., a tropical American tree (Chrysophyllum Cainito), having a milky juice and oblong leaves with a silky-golden pubescence beneath. It bears an applelike fruit, the carpels of which present a starlike figure when cut across. The name is extended to the whole genus of about sixty species, and the natural order (Sapotaceae) to which it belongs is called the Star-apple family.
 Star conner, one who cons, or studies, the stars; an astronomer or an astrologer. --Gascoigne.
 Star coral Zool., any one of numerous species of stony corals belonging to Astraea, Orbicella, and allied genera, in which the calicles are round or polygonal and contain conspicuous radiating septa.
 Star cucumber. Bot. See under Cucumber.
 Star flower. Bot. (a) A plant of the genus Ornithogalum; star-of-Bethlehem. (b) See Starwort (b). (c) An American plant of the genus Trientalis (Trientalis Americana). --Gray.
 Star fort Fort., a fort surrounded on the exterior with projecting angles; -- whence the name.
 Star gauge Ordnance, a long rod, with adjustable points projecting radially at its end, for measuring the size of different parts of the bore of a gun.
 Star grass. Bot. (a) A small grasslike plant (Hypoxis erecta) having star-shaped yellow flowers. (b) The colicroot. See Colicroot.
 Star hyacinth Bot., a bulbous plant of the genus Scilla (Scilla autumnalis); -- called also star-headed hyacinth.
 Star jelly Bot., any one of several gelatinous plants (Nostoc commune, Nostoc edule, etc.). See Nostoc.
 Star lizard. Zool. Same as Stellion.
 Star-of-Bethlehem Bot., a bulbous liliaceous plant (Ornithogalum umbellatum) having a small white starlike flower.
 Star-of-the-earth Bot., a plant of the genus Plantago (Plantago coronopus), growing upon the seashore.
 Star polygon Geom., a polygon whose sides cut each other so as to form a star-shaped figure.
 Stars and Stripes, a popular name for the flag of the United States, which consists of thirteen horizontal stripes, alternately red and white, and a union having, in a blue field, white stars to represent the several States, one for each.
    With the old flag, the true American flag, the Eagle, and the Stars and Stripes, waving over the chamber in which we sit.   --D. Webster.
 Star showers. See Shooting star, under Shooting.
 Star thistle Bot., an annual composite plant (Centaurea solstitialis) having the involucre armed with stout radiating spines.
 Star wheel Mach., a star-shaped disk, used as a kind of ratchet wheel, in repeating watches and the feed motions of some machines.
 Star worm Zool., a gephyrean.
 Temporary star Astron., a star which appears suddenly, shines for a period, and then nearly or quite disappears.  These stars were supposed by some astronomers to be variable stars of long and undetermined periods.  More recently, variations star in start intensity are classified more specifically, and this term is now obsolescent.  See also nova. [Obsolescent]
 Variable star Astron., a star whose brilliancy varies periodically, generally with regularity, but sometimes irregularly; -- called periodical star when its changes occur at fixed periods.
 Water star grass Bot., an aquatic plant (Schollera graminea) with small yellow starlike blossoms.