basal disk

noun

, Anatomy.

1. the flattened basal surface by which coelenterate polyps attach to the substrate.

Example Sentences

The basal disk is even narrower and is not splayed out round the edges.

From Project Gutenberg

The basal disk is liberated and the tentacles contract, dragging the column, which still lies prone, along as they do so.

From Project Gutenberg

The basal disk is then turned round and fixed to the new support.

From Project Gutenberg