any of a genus (Spirula) of two-gilled, deep-water cephalopods, having a flat spiral shell with a series of chambers
Origin of spirulaModL, name of the genus, diminutive of Classical Latin spira: see spire
A small squid of the genus Spirula, having a spirally coiled, chambered, internal shell often found on beaches.
Origin of spirulaLate Latin spīrula twisted cake diminutive of Latin spīra coil ; see spire 2.
Diminutive of Latin spira (“a coil")