from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The act or process of forming something or of taking form.
  • n. Something formed: beautiful cloud formations.
  • n. The manner or style in which something is formed; structure: the distinctive formation of the human eye.
  • n. A specified arrangement or deployment, as of troops.
  • n. Geology The primary unit of lithostratigraphy, consisting of a succession of strata useful for mapping or description.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Something possessing structure or form.
  • n. The act of assembling a group or structure.
  • n. A rock or face of a mountain.
  • n. A grouping of military units or smaller formations under a command, such as a brigade, division, wing, etc.
  • n. An arrangement of moving troops, ships, or aircraft, such as a wedge, line abreast, or echelon. Often "in formation".
  • n. The process of influencing or guiding a person to a deeper understanding of a particular vocation.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act of giving form or shape to anything; a forming; a shaping.
  • n. The manner in which a thing is formed; structure; construction; conformation; form.
  • n. A substance formed or deposited.
  • n.
  • n. Mineral deposits and rock masses designated with reference to their origin
  • n. A group of beds of the same age or period.
  • n. The arrangement of a body of troops, as in a square, column, etc.

from The Century Dictionary and Cyclopedia

  • n. The act or process of forming or making; the operation of composing by the union of materials or elements, or of shaping and giving form; a putting or coming into form: as, the formation of a state or constitution; the formation of ideas or of character.
  • n. Disposition of parts or elements; formal structure or arrangement; conformation; configuration: as, the peculiar formation of the heart; a formation of troops in columns, squares, etc.
  • n. That which is formed; anything considered as to its form, structure, or arrangement: as, the formation consisted of a mass of incongruous materials. Specifically
  • n. In geology, properly, a group or assemblage of rocks, whether stratified or unstratified, having a similar origin or some common physical character.
  • n. In the classification of rock-masses as adopted by the United States Geological Survey for cartographic purposes, the cartographic unit, or usually the ultimate rock body separately named and mapped.
  • n. In œcol., a plant society or association. See the extract and plant formation.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a particular spatial arrangement
  • n. an arrangement of people or things acting as a unit
  • n. creation by mental activity
  • n. the act of forming or establishing something
  • n. natural process that causes something to form
  • n. (geology) the geological features of the earth
  • n. the act of fabricating something in a particular shape


from Wiktionary, Creative Commons Attribution/Share-Alike License

From French formation, from Latin formatio, from formare ("to form"); see form as verb.



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