spirula

/spir-yuh-luh, -oo-luh/US // ˈspɪr yə lə, -ʊ lə //UK // (ˈspaɪrʊlə) //

螺旋桨,旋涡,螺旋体,旋涡状

Definitions

n.名词 noun

1
plural spir·u·lae [spir-yuh-lee, -oo-lee]. /ˈspɪr yəˌli, -ʊˌli/.
- : any cephalopod of the genus Spirula, having a flat, spiral shell that is partly inside and partly outside the posterior part of the body.

Among the tufts of grass on the sloping sides of this mound were great numbers of Spirula-shells in a tolerably perfect condition.
In places in New Zealand, and elsewhere, large fossil deposits of Spirula peroni occur.
After a gale, on looking amongst the wrack cast up by the highest waves, large numbers of our Spirula will be found.
The latter is partly straight and partly convoluted, nearly as in Spirula.
A series of Chambers joining each other, as in Nautilus, Spirula, &c.