- any echinoderm of the class Ophiuroidea, having the body composed of a central, rounded disk from which radiate long, slender, fragile arms.
Origin of brittle star
First recorded in 1835–45
Also called serpent star.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for brittle-star
Thus, for instance, when a Brittle-star has its nerve-ring severed between each ray, an interesting series of events follows.
We saw just now that the brittle-star breaks off its own rays at the slightest alarm.The Animal World, A Book of Natural History
- any echinoderm of the class Ophiuroidea, occurring on the sea bottom and having five long slender arms radiating from a small central discSee also basket-star