chiefly Mycology (now rare) of the nature of or resembling a rhizomorph; resembling a root, root-like.
ΚΠ
1860 M. J. BerkeleyOutl. Brit. Fungol. 265O[dontia] fimbriata, Fr.; effused, membranaceous, separating from the matrix, traversed by rhizomorphoid threads.
1904 Bull. Torrey Bot. Club31 182 The abundant rhizomorphoid mycelium is a marked feature of this species.