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⇱ rock formation - WordReference.com Dictionary of English


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rock formation


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Also see: rock

WordReference Random House Learner's Dictionary of American English © 2026
for•ma•tion /fɔrˈmeɪʃən/USA pronunciation   n. 
  1. the act or process of forming or the state of being formed:[uncountable]the formation of ice.
  2. the manner in which a thing is formed;
    formal structure or arrangement: [countable]a formation of jet planes.[uncountable]planes flying in formation.
  3. Military development;
    creation;
    establishment:[uncountable]The Pilgrims' goal was the formation of a colony in the New World.
See -form-.
WordReference Random House Unabridged Dictionary of American English © 2026
for•ma•tion  (fôr māshən),USA pronunciation n. 
  1. the act or process of forming or the state of being formed:the formation of ice.
  2. the manner in which a thing is formed;
    disposition of parts;
    formal structure or arrangement.
  3. Military
    • Militarya particular disposition of troops, as in columns, squares, etc.
    • any required assembling of the soldiers of a unit.
  4. [Geol.]
    • a body of rocks classed as a stratigraphic unit for geologic mapping. Cf. member (def. 8).
    • the process of depositing rock or mineral of a particular composition or origin.
  • Latin fōrmātiōn- (stem of fōrmātiō), equivalent. to fōrmāt(us) (see form, -ate1) + -iōn- -ion
  • late Middle English formacioun 1375–1425
for•mation•al, adj. 
    1. establishment, founding, organization.

Collins Concise English Dictionary © HarperCollins Publishers::
formation /fɔːˈmeɪʃən/ n
  1. the act of giving or taking form, shape, or existence
  2. something that is formed
  3. the manner in which something is formed or arranged
    • a formal arrangement of a number of persons or things acting as a unit, such as a troop of soldiers, aircraft in flight, or a football team
    • (as modifier): formation dancing
    • the fundamental lithostratigraphic unit
    • a series of rocks with certain characteristics in common
'rock formation' also found in these entries (note: many are not synonyms or translations):
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