- any of certain anthozoans, especially Gorgonia flabellum, of the West Indies, in which the colony assumes a fanlike form.
Origin of sea fan
First recorded in 1625–35
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any of various corals of the genus Gorgonia and related genera, having a treelike or fan-shaped horny skeleton: order Gorgonacea (gorgonians)