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Definition of Spirula
1. Noun. A small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many-chambered shell coiled in a flat spiral.
Definition of Spirula
1. n. A genus of cephalopods having a multilocular, internal, siphunculated shell in the form of a flat spiral, the coils of which are not in contact.
Definition of Spirula
1. Noun. (zoology) Any of the cephalopod genus ''Spirula''. ¹
¹ Source: wiktionary.com
Definition of Spirula
1. a spiral-shelled mollusk [n -LAE or -LAS]
Medical Definition of Spirula
1.