WordDictionary

Adjective:

• Acting by deputation or delegated authority; as, the work of secondary hands.
• geology 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.
• medicine 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.
• Of less than primary importance.
• Possessing some quality, or having been subject to some operation (as substitution), in the second degree; as, a secondary salt, a secondary amine, etc. Cf. primary.
• Succeeding next in order to the first; of second place, origin, rank, rank, etc.; not primary; subordinate; not of the first order or rate.
• zootomy Pertaining to the second joint of the wing of a bird.

Noun:

• finance An act of issuing more stock by an already publicly traded corporation.
• Used as an abbreviation to refer to items with names containing secondary.
• ornithology Any flight feather attached to the ulna (forearm) of a bird.