[ verb uh-glom-uh-reyt; adjective, noun uh-glom-er-it, -uh-reyt ]
See synonyms for: agglomerateagglomeratedagglomerating on

verb (used with or without object),ag·glom·er·at·ed, ag·glom·er·at·ing.
  1. to collect or gather into a cluster or mass.

  1. gathered together into a cluster or mass.

  2. Botany. crowded into a dense cluster, but not cohering.

  1. a mass of things clustered together.

  2. rock composed of rounded or angular volcanic fragments.

Origin of agglomerate

1675–85; <Latin agglomerātus (past participle of agglomerāre), equivalent to ag-ag- + glomer- (stem of glomus ball of yarn) + -ātus-ate1

Other words for agglomerate

Opposites for agglomerate

Other words from agglomerate

  • ag·glom·er·a·tive [uh-glom-uh-rey-tiv, -er-uh-tiv], /əˈglɒm əˌreɪ tɪv, -ər ə tɪv/, adjective
  • ag·glom·er·a·tor, noun
  • non·ag·glom·er·a·tive, adjective
  • un·ag·glom·er·a·tive, adjective

Words Nearby agglomerate Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use agglomerate in a sentence

  • Amongst the vents filled with ash and agglomerate, the most remarkable is that of Carrick-a-raide, near Ballycastle.

British Dictionary definitions for agglomerate


  1. to form or be formed into a mass or cluster; collect

noun(əˈɡlɒmərɪt, -ˌreɪt)
  1. a confused mass

  2. a rock consisting of angular fragments of volcanic lava: Compare conglomerate (def. 2)

adjective(əˈɡlɒmərɪt, -ˌreɪt)
  1. formed into a mass

Origin of agglomerate

C17: from Latin agglomerāre, from glomerāre to wind into a ball, from glomus ball, mass

Derived forms of agglomerate

  • agglomeration, noun
  • agglomerative, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012