Definition of "compaction" [com•pac•tion]

• The process of compacting or the state of being compacted. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "In Mexico, proper compaction is in the very infancy of technology."
• "Consequently, high and low moisture contents will result in poor compaction, which is synonymous with low density."
• "Gelderman said soil compaction occurs when soil particles are pushed together, reducing the soil pore spaces."