Clump or clumping may refer to:
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Clumping (biology), an organic behavior
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Wittenham Clumps
Wittenham Clumps are a pair of wooded chalk hills in the Thames Valley, in the civil parish of Little Wittenham, in the historic county of Berkshire, although since 1974 administered as part of South Oxfordshire district.
The higher of the two, ...
, a small group of hills
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Clumped isotopes (chemistry), heavy isotopes that are bonded to other heavy isotopes
* "clump", an
iamamiwhoami song
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Transit vehicle clumping
In public transport, bus bunching, clumping, convoying, piggybacking or platooning is a phenomenon whereby two or more transit vehicles (such as buses or trains) that were scheduled at regular intervals along a common route instead bunch togethe ...
, when one public transport vehicle falls behind schedule, and another scheduled behind it meets it in the same location
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