CHORD n.
The upper or lower part of a truss, usually horizontal, resisting compression or tension. Waddell. Accidental, Common, and Vocal chords. See under Accidental, Common, and Vocal. -- Chord of an arch. See Illust. of Arch. -- Chord of curvature, a chord drawn from any point of a curve, in the circle of curvature for tha…
DURABILITY n.
ng durable; the power of uninterrupted or long continuance in any condition; the power of resisting agents or influences which tend to cause changes, decay, or dissolution; lastingness. A Gothic cathedral raises ideas of grandeur in our minds by the size, its height, . . . its antiquity, and its durability. Blair.…
ELECTRIC; ELECTRICAL a.
ectrical light, the light produced by a current of electricity which in passing through a resisting medium heats it to incandescence or burns it. See under Carbon. -- Electric, or Electrical, machine, an apparatus for generating, collecting, or exciting, electricity, as by friction. -- Electric motor. See Electro-mot…