[ ri-tik-yuh-luh m ]
/ rɪˈtɪk yə ləm /

noun, plural re·tic·u·la [ri-tik-yuh-luh] /rɪˈtɪk yə lə/ for 1–3, genitive re·tic·u·li [ri-tik-yuh-lahy] /rɪˈtɪk yəˌlaɪ/ for 4.

a network; any reticulated system or structure.
  1. a network of intercellular fibers in certain tissues.
  2. a network of structures in the endoplasm or nucleus of certain cells.
Zoology. the second stomach of ruminating animals, between the rumen and the omasum.
(initial capital letter) Astronomy. the Net, a southern constellation between Dorado and Hydrus.

Nearby words

  1. reticuloendothelium,
  2. reticulohistiocytoma,
  3. reticulopenia,
  4. reticulosis,
  5. reticulospinal tract,
  6. reticulum cell sarcoma,
  7. retiform,
  8. retiform tissue,
  9. retin-,
  10. retin-a

Origin of reticulum

1650–60; < Latin rēticulum little net; see reticle Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for reticulum

British Dictionary definitions for reticulum


/ (rɪˈtɪkjʊləm) /

noun plural -la (-lə)

any fine network, esp one in the body composed of cells, fibres, etc
the second compartment of the stomach of ruminants, situated between the rumen and psalterium

Word Origin for reticulum

C17: from Latin: little net, from rēte net


/ (rɪˈtɪkjʊləm) /

noun Latin genitive Reticuli (rɪˈtɪkjʊˌlaɪ)

a small constellation in the S hemisphere lying between Dorado and Hydrus
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

Word Origin and History for reticulum



1650s, "second stomach of a ruminant" (so called from the folds of the membrane), from Latin reticulum "a little net" (see reticulate (adj.)). The word was later given various uses in biology, cytology, histology, etc., and made a southern constellation by La Caille (1763).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for reticulum


[ rĭ-tĭkyə-ləm ]

n. pl. re•tic•u•la (-lə)

A fine network formed by cells, by certain structures within cells, or by connective-tissue fibers between cells.
The second compartment of the stomach of ruminant mammals, lined with a membrane having honeycombed ridges.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for reticulum


[ rĭ-tĭkyə-ləm ]

Plural reticula

The second division of the stomach in ruminant animals, which together with the rumen contains microorganisms that digest fiber. The reticulum's contents are regurgitated for further chewing as part of the cud. See more at ruminant.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.