‖ subumˈbrella Zool.
[mod.L.; see sub- 1 f.]
The internal ventral or oral disk of a hydrozoan; the concave muscular layer beneath the umbrella of a jelly-fish.
| 1878 Bell tr. Gegenbaur's Comp. Anat. 108 In the Medusæ it [sc. a muscular layer] is limited to the surface which carries the gastric apparatus, where it forms the ‘sub-umbrella’. 1888 Rolleston & Jackson Anim. Life 248 Scattered ganglion cells in connection with this [inner nerve] ring lie in the ectoderm of the sub-umbrella. |
Hence subumˈbrellar a. [sub- 1 b.], beneath the umbrella; pertaining to the subumbrella.
| 1877 Huxley Anat. Inv. Anim. iii. 137 A sub-umbrellar cavity with a roof formed by the umbrella. |