Definition of "clustering"

clustering

noun
plural clusterings
1. A grouping of a number of similar things.
2. (demographics) The grouping of a population based on ethnicity, economics or religion.
3. (computing) The undesirable contiguous grouping of elements in a hash table.
4. (writing) A prewriting technique consisting of writing ideas down on a sheet of paper around a central idea within a circle, with the related ideas radially joined to the circle using rays.
adjective
not comparable
1. Forming a cluster.
  Quotations
  I prithee let me bring thee where crabs grow,and I with my long nails will dig thee pig-nuts,Show thee a jay's nest, and instruct thee howTo snare the nimble marmoset. I'll bring theeTo clust'ring filberts, and sometimes I'll get theeYoung scamels from the rock. Wilt thou go with me?
  1610–1611 (date written), William Shakespeare, “The Tempest”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act II, scene ii]
verb
1. present participle and gerund of cluster