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or floatation

[floh-tey-shuh n] /floʊˈteɪ ʃən/
an act or state of floating.
the launching of a commercial venture, bond issue, loan, etc.
Metallurgy. a process for separating the different minerals in a mass of powdered ore based on their tendency to sink in, or float on, a given liquid.
the science of floating bodies.
Origin of flotation
1800-10; float + -ation; compare French flottaison (see flotsam) Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for flotation
Contemporary Examples
Historical Examples
  • And there were a number of other things that are impossible, yet facts in the amazing History of flotation.

    Mushroom Town Oliver Onions
  • "It is about that Sahara flotation, Mr. Jackson," he began rather doubtfully.

    The Yellow God H. Rider Haggard
  • Besides this its power of flotation—suspension in the air—is circumscribed.

    Flying Machines W.J. Jackman and Thos. H. Russell
  • Speed is an important requisite in a flying-machine motor, as the velocity of the aeroplane is a vital factor in flotation.

    Flying Machines W.J. Jackman and Thos. H. Russell
  • Rivière remembered that he himself had cleared £50,000 over the flotation, and the remembrance jarred on him.

    Swirling Waters Max Rittenberg
  • As in all such ships, the armour-plating is distributed (a) to protect her flotation and (b) to protect her guns.

    The British Navy Book Cyril Field
  • After the flotation, with its harvest of disgrace and scandal, Leonard Lewisohn became a changed man.

    Frenzied Finance Thomas W. Lawson
  • It must be proven to him that flotation methods work as well in mining human resources as in mining metal.

    The Great Gray Plague Raymond F. Jones
  • He paused for a moment, then continued: "Here's the draft scheme for the flotation."

    Swirling Waters Max Rittenberg
British Dictionary definitions for flotation


  1. the launching or financing of a commercial enterprise by bond or share issues
  2. the raising of a loan or new capital by bond or share issues
power or ability to float; buoyancy
Also called froth flotation. a process to concentrate the valuable ore in low-grade ores. The ore is ground to a powder, mixed with water containing surface-active chemicals, and vigorously aerated. The bubbles formed trap the required ore fragments and carry them to the surface froth, which is then skimmed off
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for flotation

1850s, from float (v.) + -ation. Spelling influenced by French (cf. floatation).

Online Etymology Dictionary, © 2010 Douglas Harper
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flotation in Medicine

flotation flo·ta·tion (flō-tā'shən)
The process of separating different materials, especially minerals, by agitating a pulverized mixture of the materials with water, oil, and chemicals. Differential wetting of the suspended particles causes unwetted particles to be carried by air bubbles to the surface for collection.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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