pseudoumbilicalWiktionary 原文英美构词拆解pseudopseudo-前缀umbilicalumbilical词干pseudo-False; not genuine; fake. · (proscribed) Quasi-; almost.词源说明From pseudo- + umbilical.释义形容词adjective1(mathematics) Umbilical in the direction of the mean curvature vector field everywhere.2Having the appearance or some of the properties of a navel (umbilicus) or an umbilical cord.