LED
 (vbl.)lead的過去式和過去分詞


 led
 發光二極體


 led
 發光二極體


 Lead v. t. [imp. & p. p. Led p. pr. & vb. n. Leading.]
 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.
    If a blind man lead a blind man, both fall down in the ditch.   --Wyclif (Matt. xv. 14.)
    They thrust him out of the city, and led him unto the brow of the hill.   --Luke iv. 29.
 In thy right hand lead with thee
 The mountain nymph, sweet Liberty.   --Milton.
 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.  Hence, figuratively: To direct; to counsel; to instruct; as, to lead a traveler; to lead a pupil.
    The Lord went before them by day in a pillar of a cloud, to lead them the way.   --Ex. xiii. 21.
    He leadeth me beside the still waters.   --Ps. xxiii. 2.
 This thought might lead me through the world's vain mask.
 Content, though blind, had I no better guide.   --Milton.
 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.
    Christ took not upon him flesh and blood that he might conquer and rule nations, lead armies, or possess places.   --South.
 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.
    As Hesperus, that leads the sun his way.   --Fairfax.
    And lo ! Ben Adhem's name led all the rest.   --Leigh Hunt.
 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.
    He was driven by the necessities of the times, more than led by his own disposition, to any rigor of actions.   --Eikon Basilike.
    Silly women, laden with sins, led away by divers lusts.   --2 Tim. iii. 6 (Rev. Ver.).
 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).
    That we may lead a quiet and peaceable life.   --1 Tim. ii. 2.
 Nor thou with shadowed hint confuse
 A life that leads melodious days.   --Tennyson.
    You remember . . . the life he used to lead his wife and daughter.   --Dickens.
 7. Cards & Dominoes To begin a game, round, or trick, with; as, to lead trumps; the double five was led.
 To lead astray, to guide in a wrong way, or into error; to seduce from truth or rectitude.
 To lead captive, to carry or bring into captivity.
 To lead the way, to show the way by going in front; to act as guide. --Goldsmith.


 Led imp. & p. p. of Lead.
 Led captain. An obsequious follower or attendant. [Obs.] --Swift.
 Led horse, a sumpter horse, or a spare horse, that is led along.

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 lead
      n 1: a soft heavy toxic malleable metallic element; bluish white
           when freshly cut but tarnishes readily to dull gray;
           "the children were playing with lead soldiers" [syn: Pb,
            atomic number 82]
      2: an advantage held by a competitor in a race; "he took the
         lead at the last turn"
      3: evidence pointing to a possible solution; "the police are
         following a promising lead"; "the trail led straight to
         the perpetrator" [syn: track, trail]
      4: a position of leadership (especially in the phrase `take the
         lead'); "he takes the lead in any group"; "we were just
         waiting for someone to take the lead"; "they didn't follow
         our lead"
      5: the angle between the direction a gun is aimed and the
         position of a moving target (correcting for the flight
         time of the missile)
      6: the introductory section of a story; "it was an amusing
         lead-in to a very serious matter" [syn: lead-in]
      7: an actor who plays a principal role [syn: star, principal]
      8: (baseball) the position taken by a base runner preparing to
         advance to the next base; "he took a long lead off first"
      9: an indication of potential opportunity; "he got a tip on the
         stock market"; "a good lead for a job" [syn: tip, steer,
          confidential information, wind, hint]
      10: a news story of major importance [syn: lead story]
      11: the timing of ignition relative to the position of the
          piston in an internal-combustion engine [syn: {spark
          advance]
      12: restraint consisting of a rope (or light chain) used to
          restrain an animal [syn: leash, tether]
      13: thin strip of metal used to separate lines of type in
          printing [syn: leading]
      14: mixture of graphite with clay in different degrees of
          hardness; the marking substance in a pencil [syn: {pencil
          lead]
      15: a jumper that consists of a short piece of wire; "it was a
          tangle of jumper cables and clip leads" [syn: {jumper
          cable, jumper lead]
      16: the playing of a card to start a trick in bridge; "the lead
          was in the dummy"
      v 1: take somebody somewhere; "We lead him to our chief"; "can
           you take me to the main entrance?"; "He conducted us to
           the palace" [syn: take, direct, conduct, guide]
      2: result in; "The water left a mark on the silk dress"; "Her
         blood left a stain on the napkin" [syn: leave, result]
      3: tend to or result in; "This remark lead to further arguments
         among the guests"
      4: travel in front of; go in advance of others; "The procession
         was headed by John" [syn: head]
      5: cause to undertake a certain action; "Her greed led her to
         forge the checks"
      6: stretch out over a distance, space, time, or scope; run or
         extend between two points or beyond a certain point;
         "Service runs all the way to Cranbury"; "His knowledge
         doesn't go very far"; "My memory extends back to my fourth
         year of life"; "The facts extend beyond a consideration of
         her personal assets" [syn: run, go, pass, extend]
      7: be in charge of; "Who is heading this project?" [syn: head]
      8: be ahead of others; be the first; "she topped her class
         every year" [syn: top]
      9: be conducive to; "The use of computers in the classroom lead
         to better writing" [syn: contribute, conduce]
      10: lead, as in the performance of a composition; "conduct an
          orchestra; Bairenboim conducted the Chicago symphony for
          years" [syn: conduct, direct]
      11: pass or spend; "lead a good life"
      12: lead, extend, or afford access; "This door goes to the
          basement"; "The road runs South" [syn: go]
      13: move ahead (of others) in time or space [syn: precede]
          [ant: follow]
      14: cause something to pass or lead somewhere; "Run the wire
          behind the cabinet" [syn: run]
      15: preside over; "John moderated the discussion" [syn: moderate,
           chair]
      [also: led]


 LED
      n : diode such that light emitted at a p-n junction is
          proportional to the bias current; color depends on the
          material used [syn: light-emitting diode]


 led
      See lead