A colonial thaliacean (tunicate) of the genus Pyrosoma.
Origin
Early 19th century; earliest use found in John Pinkerton (1758–1826), historian and poet. From French pyrosome from scientific Latin Pyrosoma; compare -some.
Definition of pyrosome in US English:
pyrosome
nounˈpʌɪrə(ʊ)səʊm
Zoology
A colonial thaliacean (tunicate) of the genus Pyrosoma.
Origin
Early 19th century; earliest use found in John Pinkerton (1758–1826), historian and poet. From French pyrosome from scientific Latin Pyrosoma; compare -some.