basal disk

American  

noun

Anatomy.

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

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Example Sentences

Each mesentery is attached by its upper margin to the peristome, by its outer margin to the body-wall, and by its lower margin to the basal disk.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" by Various

The column is dragged forward, still lying almost prone, the basal disk is bent downwards and again attached, and the whole movement is repeated.

From Freshwater Sponges, Hydroids & Polyzoa by Annandale, Nelson

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

From Freshwater Sponges, Hydroids & Polyzoa by Annandale, Nelson

As the mesenteries are formed, the endoderm of the basal disk lying above the basal plate is raised up in the form of radiating folds.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" by Various

Other mesenteries, called incomplete, are not attached to the stomodaeum, and their internal margins are free from the peristome to the basal disk.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" by Various