sedimentation

[sed-uh-muhn-tey-shuhn]

sed·i·men·ta·tion

[sed-uh-muhn-tey-shuhn]
noun
the deposition or accumulation of sediment.

Origin:
1870–75; sediment + -ation

self-sed·i·men·ta·tion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Sedimentation has a plethora of syllables.
So is sesquipedalianism. Does it mean:
a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S.
given to using long words.
Collins
World English Dictionary
sedimentation (ˌsɛdɪmɛnˈteɪʃən)
 
n
1.  the process of formation of sedimentary rocks
2.  the deposition or production of sediment
3.  chem, biochem the process by which large molecules or macroscopic particles are concentrated in a centrifugal field in a centrifuge or ultracentrifuge

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

sedimentation sed·i·men·ta·tion (sěd'ə-mən-tā'shən, -měn-)
n.
The act or process of depositing or forming a sediment.

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