reticulum
re.tic.u.lum \ri-'tik-y*-l*m\ \-l*\ n or re.tic.u.la [NL, fr. L, network] pl 1: the second stomach of a ruminant in which folds of the mucous membrane f orm hexagonal cells 2: NETWORK; esp : interstitial tissue composed of reticulum c ells
Webster's English Dictionaryre.tic.u.lum \ri-'tik-y*-l*m\ \-l*\ n or re.tic.u.la [NL, fr. L, network] pl 1: the second stomach of a ruminant in which folds of the mucous membrane f orm hexagonal cells 2: NETWORK; esp : interstitial tissue composed of reticulum c ells