· Clumps groups XP orbs together into a single entity to reduce lag when there are many in a small area. On top of this, it also makes the player immediately collect the orbs once they touch the … The second component of the stratospheric bacterial population consists of bacteria that exist as relatively large clumps ; this population is viable, but non-culturable. (intr) to walk or tread heavily to gather or be gathered into clumps, clusters, clots, etc to cause (bacteria, blood cells, etc) to collect together or (of bacteria, etc) to collect together slang (tr) to punch (someone) They like clumps of trees that are close together so that it is easy for them to fly between them. transitive verb : to arrange in or cause to form clumps the serum clumps the bacteria Other forms: clumps; clumped; clumping A clump is a "bunch" or a "cluster." If you're a gardener, the last thing you want to see is a clump of weeds growing in the middle of your newly groomed lawn. … Define clump. clump synonyms, clump pronunciation, clump translation, English dictionary definition of clump. n. 1. A clustered mass; a lump: clumps of soil. 2. A thick grouping, as of trees or bushes. 3. A … 2 clump / ˈ klʌmp/ verb clumps; clumped; clumping Britannica Dictionary definition of CLUMP 1 : to form a mass or clump Definition of clump noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.