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dead center
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English Dictionary: dead center by the DICT Development Group
3 results for dead center
From WordNet (r) 3.0 (2006) [wn]:
dead center
n
  1. the position of a crank when it is in line with the connecting rod and not exerting torque
    Synonym(s): dead center, dead centre
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Dead \Dead\ (d[ecr]d), a. [OE. ded, dead, deed, AS. de[a0]d;
      akin to OS. d[omac]d, D. dood, G. todt, tot, Icel. dau[edh]r,
      Sw. & Dan. d[94]d, Goth. daubs; prop. p. p. of an old verb
      meaning to die. See {Die}, and cf. {Death}.]
      1. Deprived of life; -- opposed to {alive} and {living};
            reduced to that state of a being in which the organs of
            motion and life have irrevocably ceased to perform their
            functions; as, a dead tree; a dead man. [bd]The queen, my
            lord, is dead.[b8] --Shak.
  
                     The crew, all except himself, were dead of hunger.
                                                                              --Arbuthnot.
  
                     Seek him with candle, bring him dead or living.
                                                                              --Shak.
  
      2. Destitute of life; inanimate; as, dead matter.
  
      3. Resembling death in appearance or quality; without show of
            life; deathlike; as, a dead sleep.
  
      4. Still as death; motionless; inactive; useless; as, dead
            calm; a dead load or weight.
  
      5. So constructed as not to transmit sound; soundless; as, a
            dead floor.
  
      6. Unproductive; bringing no gain; unprofitable; as, dead
            capital; dead stock in trade.
  
      7. Lacking spirit; dull; lusterless; cheerless; as, dead eye;
            dead fire; dead color, etc.
  
      8. Monotonous or unvaried; as, a dead level or pain; a dead
            wall. [bd]The ground is a dead flat.[b8] --C. Reade.
  
      9. Sure as death; unerring; fixed; complete; as, a dead shot;
            a dead certainty.
  
                     I had them a dead bargain.                  --Goldsmith.
  
      10. Bringing death; deadly. --Shak.
  
      11. Wanting in religious spirit and vitality; as, dead faith;
            dead works. [bd]Dead in trespasses.[b8] --Eph. ii. 1.
  
      12. (Paint.)
            (a) Flat; without gloss; -- said of painting which has
                  been applied purposely to have this effect.
            (b) Not brilliant; not rich; thus, brown is a dead color,
                  as compared with crimson.
  
      13. (Law) Cut off from the rights of a citizen; deprived of
            the power of enjoying the rights of property; as, one
            banished or becoming a monk is civilly dead.
  
      14. (Mach.) Not imparting motion or power; as, the dead
            spindle of a lathe, etc. See {Spindle}.
  
      {Dead ahead} (Naut.), directly ahead; -- said of a ship or
            any object, esp. of the wind when blowing from that point
            toward which a vessel would go.
  
      {Dead angle} (Mil.), an angle or space which can not be seen
            or defended from behind the parapet.
  
      {Dead block}, either of two wooden or iron blocks intended to
            serve instead of buffers at the end of a freight car.
  
      {Dead calm} (Naut.), no wind at all.
  
      {Dead center}, [or] {Dead point} (Mach.), either of two
            points in the orbit of a crank, at which the crank and
            connecting rod lie a straight line. It corresponds to the
            end of a stroke; as, A and B are dead centers of the crank
            mechanism in which the crank C drives, or is driven by,
            the lever L.
  
      {Dead color} (Paint.), a color which has no gloss upon it.
  
      {Dead coloring} (Oil paint.), the layer of colors, the
            preparation for what is to follow. In modern painting this
            is usually in monochrome.
  
      {Dead door} (Shipbuilding), a storm shutter fitted to the
            outside of the quarter-gallery door.
  
      {Dead flat} (Naut.), the widest or midship frame.
  
      {Dead freight} (Mar. Law), a sum of money paid by a person
            who charters a whole vessel but fails to make out a full
            cargo. The payment is made for the unoccupied capacity.
            --Abbott.
  
      {Dead ground} (Mining), the portion of a vein in which there
            is no ore.
  
      {Dead hand}, a hand that can not alienate, as of a person
            civilly dead. [bd]Serfs held in dead hand.[b8] --Morley.
            See {Mortmain}.
  
      {Dead head} (Naut.), a rough block of wood used as an anchor
            buoy.
  
      {Dead heat}, a heat or course between two or more race
            horses, boats, etc., in which they come out exactly equal,
            so that neither wins.
  
      {Dead horse}, an expression applied to a debt for wages paid
            in advance. [Law]
  
      {Dead language}, a language which is no longer spoken or in
            common use by a people, and is known only in writings, as
            the Hebrew, Greek, and Latin.

From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Center \Cen"ter\, n. [F. centre, fr. L. centrum, fr. round which
      a circle is described, fr. [?] to prick, goad.]
      1. A point equally distant from the extremities of a line,
            figure, or body, or from all parts of the circumference of
            a circle; the middle point or place.
  
      2. The middle or central portion of anything.
  
      3. A principal or important point of concentration; the
            nucleus around which things are gathered or to which they
            tend; an object of attention, action, or force; as, a
            center of attaction.
  
      4. The earth. [Obs.] --Shak.
  
      5. Those members of a legislative assembly (as in France) who
            support the existing government. They sit in the middle of
            the legislative chamber, opposite the presiding officer,
            between the conservatives or monarchists, who sit on the
            right of the speaker, and the radicals or advanced
            republicans who occupy the seats on his left, See {Right},
            and {Left}.
  
      6. (Arch.) A temporary structure upon which the materials of
            a vault or arch are supported in position until the work
            becomes self-supporting.
  
      7. (Mech.)
            (a) One of the two conical steel pins, in a lathe, etc.,
                  upon which the work is held, and about which it
                  revolves.
            (b) A conical recess, or indentation, in the end of a
                  shaft or other work, to receive the point of a center,
                  on which the work can turn, as in a lathe.
  
      Note: In a lathe the
  
      {live center} is in the spindle of the head stock; the
  
      {dead center} is on the tail stock.
  
      {Planer centers} are stocks carrying centers, when the object
            to be planed must be turned on its axis.
  
      {Center of an army}, the body or troops occupying the place
            in the line between the wings.
  
      {Center of a} {curve [or] surface} (Geom.)
            (a) A point such that every line drawn through the point
                  and terminated by the curve or surface is bisected at
                  the point.
            (b) The fixed point of reference in polar co[94]rdinates.
                  See {Co[94]rdinates}.
  
      {Center of curvature of a curve} (Geom.), the center of that
            circle which has at any given point of the curve closer
            contact with the curve than has any other circle whatever.
            See {Circle}.
  
      {Center of a fleet}, the division or column between the van
            and rear, or between the weather division and the lee.
  
      {Center of gravity} (Mech.), that point of a body about which
            all its parts can be balanced, or which being supported,
            the whole body will remain at rest, though acted upon by
            gravity.
  
      {Center of gyration} (Mech.), that point in a rotating body
            at which the whole mass might be concentrated
            (theoretically) without altering the resistance of the
            intertia of the body to angular acceleration or
            retardation.
  
      {Center of inertia} (Mech.), the center of gravity of a body
            or system of bodies.
  
      {Center of motion}, the point which remains at rest, while
            all the other parts of a body move round it.
  
      {Center of oscillation}, the point at which, if the whole
            matter of a suspended body were collected, the time of
            oscillation would be the same as it is in the actual form
            and state of the body.
  
      {Center of percussion}, that point in a body moving about a
            fixed axis at which it may strike an obstacle without
            communicating a shock to the axis.
  
      {Center of pressure} (Hydros.), that point in a surface
            pressed by a fluid, at which, if a force equal to the
            whole pressure and in the same line be applied in a
            contrary direction, it will balance or counteract the
            whole pressure of the fluid.
No guarantee of accuracy or completeness!
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