1. Any flight feather attached to the ulna (forearm) of a bird.
  2. An act of issuing more stock by an already publicly traded corporation.
  3. The defensive backs.
  4. An inductive coil or loop that is magnetically powered by a primary in a transformer or similar
  5. One who occupies a subordinate or auxiliary place; a delegate deputy.
    the secondary, or undersheriff, of the city of London
  6. A secondary circle.
  7. A satellite.


  1. Succeeding next in order to the first; of second place, origin, rank, rank, etc.; not primary; subordinate; not of the first order or rate.
  2. Acting by deputation or delegated authority; as, the work of secondary hands.
  3. Possessing some quality, or having been subject to some operation (as substitution), in the second degree; as, a secondary salt, a secondary amine, etc. Compare primary.
  4. Subsequent in origin; -- said of minerals produced by alteration or deposition subsequent to the formation of the original rocks mass; also of characters of minerals (as secondary cleavage, etc.) developed by pressure or other causes.
  5. Pertaining to the second joint of the wing of a bird.
  6. Dependent or consequent upon another disease; as, Bright's disease is often secondary to scarlet fever; or occurring in the second stage of a disease; as, the secondary symptoms of syphilis.
  7. Of less than primary importance.
  8. Formed by mixing primary colors.
    Yellow is a secondary light color, though a primary CMYK color.

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