Lead is a chemical element in the carbon group with symbol Pb (from Latin: plumbum) and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed to air. Lead has a shiny chrome-silver luster when it is melted into a liquid.
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Some articles on lead:
... In the human body, lead inhibits porphobilinogen synthase and ferrochelatase, preventing both porphobilinogen formation and the incorporation of iron into protoporphyrin IX ... Acute lead poisoning is treated using disodium calcium edetate the calcium chelate of the disodium salt of ethylene-diamine-tetracetic acid (EDTA) ... This chelating agent has a greater affinity for lead than for calcium and so the lead chelate is formed by exchange ...
... mills were being used for preparing lead ... Sheets of lead were placed in clay pots and submerged in urine, then heated by decaying cow dung ... The process converted the lead to lead oxide, and it was then finely ground to form a pigment for white, yellow and red lead paint ...
... The Beatles John Lennon – lead, harmony and backing vocals, rhythm and acoustic guitars, piano, harmonica, tambourine, handclaps 12-string lead guitar on "Every Little Thing" Paul McCartney – lead ...
... yellow pigments such as the cadmium sulfides and the lead/strontium/barium chromates ... Unlike lead chromate+lead sulfate lemon, bismuth vanadate does not readily blacken with UV exposure ...
... The Lead has to communicate the direction of the movement to the Follow ... Traditionally, the Lead's right hand on the follow's back, near the lowest part of the shoulder-blade ... This is the strongest part of the back and the lead can easily pull the Follow's body inwards ...
More definitions of "lead":
- (noun): Thin strip of metal used to separate lines of type in printing.
- (verb): Cause to undertake a certain action.
Example: "Her greed led her to forge the checks"
- (noun): An indication of potential opportunity.
Example: "A good lead for a job"
Synonyms: tip, steer, confidential information, wind, hint
- (verb): Take somebody somewhere.
Example: "We lead him to our chief"
Synonyms: take, direct, conduct, guide
- (noun): The timing of ignition relative to the position of the piston in an internal-combustion engine.
Synonyms: spark advance
- (verb): Lead, extend, or afford access.
- (verb): Stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point.
Synonyms: run, go, pass, extend
- (noun): Mixture of graphite with clay in different degrees of hardness; the marking substance in a pencil.
Synonyms: pencil lead
- (noun): The playing of a card to start a trick in bridge.
Example: "The lead was in the dummy"
- (noun): Restraint consisting of a rope (or light chain) used to restrain an animal.
Synonyms: leash, tether
- (verb): Cause something to pass or lead somewhere.
- (noun): An advantage held by a competitor in a race.
Example: "He took the lead at the last turn"
- (verb): Travel in front of; go in advance of others.
- (verb): Be in charge of.
- (noun): A soft heavy toxic malleable metallic element; bluish white when freshly cut but tarnishes readily to dull gray.
Example: "The children were playing with lead soldiers"
Synonyms: Pb, atomic number 82
- (noun): A news story of major importance.
Synonyms: lead story
- (noun): Evidence pointing to a possible solution.
Example: "The police are following a promising lead"
Synonyms: track, trail
- (noun): (baseball) the position taken by a base runner preparing to advance to the next base.
Example: "He took a long lead off first"
- (noun): The angle between the direction a gun is aimed and the position of a moving target (correcting for the flight time of the missile).
- (verb): Be conducive to.
Example: "The use of computers in the classroom lead to better writing"
Synonyms: contribute, conduce
- (verb): Be ahead of others; be the first.
- (verb): Tend to or result in.
Example: "This remark lead to further arguments among the guests"
- (verb): Move ahead (of others) in time or space.
- (verb): Pass or spend.
Example: "Lead a good life"
- (noun): The introductory section of a story.
Example: "It was an amusing lead-in to a very serious matter"
- (noun): A position of leadership (especially in the phrase 'take the lead').
Example: "He takes the lead in any group"; "we were just waiting for someone to take the lead"; "they didn't follow our lead"
Famous quotes containing the word lead:
“The wolf also shall dwell with the lamb, and the leopard shall lie down with the kid; and the calf and the young lion and a little child shall lead them.”
—Bible: Hebrew, Isaiah 11:6.
“Methods of thought which claim to give the lead to our world in the name of revolution have become, in reality, ideologies of consent and not of rebellion.”
—Albert Camus (19131960)
“It is possible to lead astray an entire generation, to strike it blind, to drive it insane, to direct it towards a false goal. Napoleon proved this.”
—Alexander Herzen (18121870)