pseudoumbilical

• pseudo-umbilical

pseudo- +‎ umbilical

pseudoumbilical (not comparable)

1. (mathematics) Umbilical in the direction of the mean curvature vector field everywhere.
   • 2015, Ildefonso Castro, Ana M. Lerma, “Homothetic solitons for the inverse mean curvature flow”, in arXiv‎:

     We also characterize the pseudoumbilical ones in terms of soliton curves for the inverse curve shortening flow and minimal Legendrian immersions in odd-dimensional spheres.

2. Having the appearance or some of the properties of a navel (umbilicus) or an umbilical cord.
   • 1905, Hubert Richardson, The thyroid and parathyroid glands, page 157:

     A pseudoumbilical hernia is generally present but contains no gut ; true inguinal hernia is not uncommon.

   • 1940, Catalogue of Foraminifera - Volume 118:

     At this stage (similar to pl. 2, figs. 6-7), the coiling becomes increasingly ventrally directed with the clear onset of Streptospirality, and the aperture, as it increases in height, becomes, in part, pseudoumbilical (i. e., its inner portion lies over a developing umbilical depression).

   • 1969, Kyūshū Daigaku, Memoirs of the Faculty of Science, Kyushu University: Geology:

     A shallow pseudoumbilical depression is discernible close to the free edge of the columellar callus.