reticulum

UK: /rɪˈtɪkjʊləm/ US: (ri tik′yə ləm)

WordReference Random House Unabridged Dictionary of American English © 2025

re•tic•u•lum  (ri tik′yə ləm), n., pl. -la (-lə) for 1–3,[gen.] -li 

(-lī′) for 4.
1. a network;
   any reticulated system or structure.
2. Anatomy, Cell Biology
   • a network of intercellular fibers in certain tissues.
   • a network of structures in the endoplasm or nucleus of certain cells.
3. Zoology the second stomach of ruminating animals, between the rumen and the omasum. See diag. under ruminant. 
4. (cap.) [Astron.] the Net, a southern constellation between Dorado and Hydrus.
• Latin rēticulum little net; see reticle
• 1650–60

Collins Concise English Dictionary © HarperCollins Publishers::

reticulum / rɪˈtɪkjʊləm/ noun ( -la / -lə/)

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

Etymology: 17th Century: from Latin: little net, from rēte net