Definitions

1. noun

a colonial organism that consists of a mass of many individual cells, often forming a hollow tube-like structure, found in the ocean and similar to a siphonophore but not related to one, and characterized by its ability to set itself on fire when disturbed

“The pyrosoma’s unique ability to set itself on fire serves as a defense mechanism to deter predators.”

2. noun

a type of siphonophore that is related to the genus Pyrosoma, but is not itself a member of the genus

“The species of pyrosoma found in the Mediterranean Sea is a popular subject for marine biologists.”