Definitions

1. noun

A type of hydranth, the polyp-like structure of a coral, especially the hydranth of a sea anemone.

“The sea anemone’s hydracoral is an essential part of its ecosystem.”

2. noun

A hydracoral may also refer to the hydranth of a hydroid, a type of colonial marine cnidarian.

“The research team studied the various types of hydracorals found in the ocean.”