| 释义 |
sipunculan, n. and a.|saɪˈpʌŋkjʊlən|
[f. mod.L. name of phylum Sipuncula: see sipunculid.]
a. n. A burrowing unsegmented worm of the phylum Sipuncula, found in sandy littoral regions.
b. adj. Of or pertaining to a worm of this kind or the group as a whole.
1975Nature 30 Oct. 818/2 There is convincing evidence that myohaemerythrin, a monomeric protein found in the retractor muscles of the sipunculan worm Themiste pyroides, and the protomers of haemerythrin have quite similar tertiary structures. 1977P. E. Gibbs Brit. Sipunculans 7 Whilst sipunculans show clear embryological affinites with the Annelida, it is now generally agreed that..they are best regarded as a distinct and separate phylum. |