— rhizomatous /ruy zom"euh teuhs, -zoh"meuh-/ , adj.
/ruy"zohm/ , n. Bot.
a rootlike subterranean stem, commonly horizontal in position, that usually produces roots below and sends up shoots progressively from the upper surface.
[ 1835-45; rhizoma rhízoma root, stem, n. of result from rhizoûn to fix firmly, take root, deriv. of rhíza ROOT 1 ]