anastomosing /əˈnæs.təˌmoʊ.zɪŋ/ adjective2 •Fused together in a vein-like network; used to describe mushroom gills that are interconnected with veins.It is also generally marked above by flexuose anastomosing black, indented lines, whence it appears as if insculpt with rivulose sutures. — 1894 •Networked into irregularly branching and reconnecting veins of ore.