Lead
Definition of Lead
Pronunciation: lĕd n. | 1. | (Chem.) One of the elements, a heavy, pliable, inelastic metal, having a bright, bluish color, but easily tarnished. It is both malleable and ductile, though with little tenacity, and is used for tubes, sheets, bullets, etc. Its specific gravity is 11.37. It is easily fusible (melting point 327.5° C), forms alloys with other metals, and is an ingredient of solder and type metal. Atomic number 82. Atomic weight, 207.2. Symbol Pb (L. Plumbum). It is chiefly obtained from the mineral galena, lead sulphide. | | 2. | (Print.) An article made of lead or an alloy of lead | | 3. | A small cylinder of black lead or graphite, used in pencils.Lead colic | See under Colic. |
Lead glance | (Min.) Same as Galena. |
| v. t. | 1. | To cover, fill, or affect with lead; as, continuous firing leads the grooves of a rifle. | | 2. | (Print.) To place leads between the lines of; as, to lead a page; leaded matter. | | 1. | To guide or conduct with the hand, or by means of some physical contact or connection; as, a father leads a child; a jockey leads a horse with a halter; a dog leads a blind man. | | 2. | To guide or conduct in a certain course, or to a certain place or end, by making the way known; to show the way, esp. by going with or going in advance of. | | 3. | To conduct or direct with authority; to have direction or charge of; as, to lead an army, an exploring party, or a search; to lead a political party. | | 4. | To go or to be in advance of; to precede; hence, to be foremost or chief among; as, the big sloop led the fleet of yachts; the Guards led the attack; Demosthenes leads the orators of all ages. | | 5. | To draw or direct by influence, whether good or bad; to prevail on; to induce; to entice; to allure; as, to lead one to espouse a righteous cause. | | 6. | To guide or conduct one's self in, through, or along (a certain course); hence, to proceed in the way of; to follow the path or course of; to pass; to spend. Also, to cause (one) to proceed or follow in (a certain course). | | 7. | (Cards & Dominoes) To begin a game, round, or trick, with; as, to lead trumps; the double five was led. | v. i. | 1. | To guide or conduct, as by accompanying, going before, showing, influencing, directing with authority, etc.; to have precedence or preëminence; to be first or chief; - used in most of the senses of lead, v. t. | | 2. | To tend or reach in a certain direction, or to a certain place; as, the path leads to the mill; gambling leads to other vices. | n. | 1. | The act of leading or conducting; guidance; direction; as, to take the lead; to be under the lead of another. | | 2. | Precedence; advance position; also, the measure of precedence; as, the white horse had the lead; a lead of a boat's length, or of half a second. | | 3. | (Cards & Dominoes) The act or right of playing first in a game or round; the card suit, or piece, so played; as, your partner has the lead. | | 4. | An open way in an ice field. | | 5. | (Mining) A lode. | | 6. | (Naut.) The course of a rope from end to end. | | 7. | (Steam Engine) The width of port opening which is uncovered by the valve, for the admission or release of steam, at the instant when the piston is at end of its stroke. | | 8. | (Civil Engineering) the distance of haul, as from a cutting to an embankment. | | 9. | (Horology) The action of a tooth, as a tooth of a wheel, in impelling another tooth or a pallet. | | 10. | (Music.) The announcement by one voice part of a theme to be repeated by the other parts. | | 11. | In an internal-combustion engine, the distance, measured in actual length of piston stroke or the corresponding angular displacement of the crank, of the piston from the end of the compression stroke when ignition takes place; - called in full lead of the ignition. When ignition takes place during the working stroke the corresponding distance from the commencement of the stroke is called negative lead. | | 12. | (Mach.) The excess above a right angle in the angle between two consecutive cranks, as of a compound engine, on the same shaft. | | 13. | (Mach.) In spiral screw threads, worm wheels, or the like, the amount of advance of any point in the spiral for a complete turn. | | 14. | (Elec.) The angle between the line joining the brushes of a continuous-current dynamo and the diameter symmetrical between the poles. | | 15. | (Theat.) A role for a leading man or leading woman; also, one who plays such a role. | | 16. | The first story in a newspaper or broadcast news program. | | 17. | an electrical conductor, typically as an insulated wire or cable, connecting an electrical device to another device or to a power source, such as a conductor conveying electricity from a dynamo. | | 18. | (Baseball) the distance a runner on base advances from one base toward the next before the pitch; as, the long lead he usually takes tends to distract the pitchers. |
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Lazarwort Laze Lazily Laziness Lazuli Lazulite Lazy Lazy tongs Lazyback Lazybones Lazzaroni lcm Ld. LDL Le beau monde Lea Leach Leach brine Leach tub Leachy -Lead- Lead angle Lead arming Lead colic Lead color Lead glance Lead line Lead mill Lead ocher Lead pencil Lead plant lead plaster Lead screw Lead soap lead to Lead tree lead-free lead-in Leaded Leaden Leader
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