Pronunciation: (ri-tik'yu-lum),[key] —n., —pl.-laPronunciation: (-lu)[key]for 1–3, —gen.-liPronunciation: (-lī")[key]for 4. 1. a network; any reticulated system or structure.
2. Anat. a. a network of intercellular fibers in certain tissues.
b. a network of structures in the endoplasm or nucleus of certain cells.
3. Zool.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.