Reticulum is a word used in biology to describe a network-like structure or arrangement. It refers to a system or object that has interconnected parts forming a pattern resembling a net or mesh.
Bottom: Human epithelial cells from breast tissue showing the effects of endoplasmic reticulum stress (blue) which fills the entire cell structure. (sciencedaily.com)
I don't think we'll find another galaxy like Reticulum II anytime soon, but hey, we're going to keep looking! (kavlifoundation.org)
The protein composition of the junctional sarcoplasmic reticulum membrane encompassing the excitation - contraction coupling molecular complex (ECCMC) is extremely complicated. (inmg.fr)