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Related to clumping: sperm clumping


1. A clustered mass; a lump: clumps of soil.
2. A thick grouping, as of trees or bushes.
3. A heavy dull sound; a thud.
v. clumped, clump·ing, clumps
1. To form lumps or thick groupings.
2. To walk or move so as to make a heavy dull sound.
To gather into or form lumps or thick groupings of.

[Probably Low German klump, from Middle Low German klumpe, cluster of trees.]

clump′y adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.clumping - the sound of a horse's hoofs hitting on a hard surface
sound - the sudden occurrence of an audible event; "the sound awakened them"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in classic literature ?
Dickon's moorland boots were thick and clumsy and though he tried to walk quietly they made a clumping sound as he walked through the long corridors.
The cat litter is available in five formulas: okocat Soft Step Wood Clumping Litter, okocat Natural Wood Clumping Litter, okocat Natural Wood Long Hair Clumping Litter, okocat Natural Wood Pine Litter and okocat Natural Paper Dust Free Litter.
Clumping can be used as a test of your blood group.
This enables the product to layer up on itself to give thicker lashes without clumping.
The co-occurrence clumping scenario ([Turtle.sub.clump], [Sets.sub.turtles]) was the only spatial scenario in which the GLMs did not produce more outliers than the delta-lognormal methods.
Vince's team realized that DA has an architecture similar to a substance that makes beta-amyloid proteins clump together in the brain - clumping being a hallmark of Alzheimer's disease.
Some of the critters' normal stress responses are necessary to block clumping, too.
"Platelet clumping, a phenomenon that causes the patient's platelet count to be falsely low, is unrelated to any illness or problem.
Clumping of the mutant SOD1 protein has been observed in ALS patients and animal models of the disease.
A Platelet clumping is a common problem in the hematology laboratory, frequently leading to reports of spurious thrombocytopenia and sometimes spurious leukocytosis.
Running varieties of bamboo usually are more cold-hardy than the clumping varieties and are the best choice for erosion control, such as stabilizing banks.
Even around the house, clumping and caking can cause problems.