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Definition of annelid in English: annelidnoun ˈan(ə)lɪdˈænəˌlɪd Zoology A segmented worm of the phylum Annelida, such as an earthworm or leech. Example sentencesExamples - Arthropods, chordates and annelids are the three segmented phyla in the animal kingdom.
- The annelids include earthworms, polychaete worms, and leeches.
- Silurian ramphoprionid polychaete annelids, represented by their jaws, are described from extensive collections from Gotland, Sweden.
- The position and composition of these cells suggests that they are homologous to the gliointerstitial cell system of molluscs, sipunculans, annelids echiurans.
- After examining the opening of these traces, it is tempting to assign their origin to the behavior of vermiform borers such as annelids, sipunculids, or phoronids.
- Most biologists are familiar with only a few of the approximately 40 extant animal phyla such as annelids, arthropods, molluscs, echinoderms and chordates.
adjective ˈan(ə)lɪdˈænəˌlɪd Zoology Relating to or denoting annelids. Example sentencesExamples - It is clear that two different hydrophobic motifs are conserved in annelid species.
- These genomes have remarkably similar gene orders to previously published annelid genomes, suggesting that gene order is conserved across annelids.
- If reptiles could develop into birds then annelid worms could develop into insects.
- When present, the annelid peritoneum either rests directly on the muscle cells or is separated from them by a layer of extracellular matrix.
- These differences in expression domains indicate changes in the regulation of these genes somewhere in the annelid lineage.
Derivativesadjective & noun Zoology As a rule, annelidan segments are generated from a posterior growth zone, arising and developing sequentially, from anterior to posterior. Example sentencesExamples - The annelidan affinities of the Echiura are further strengthened by recent work demonstrating a metameric or segmented arrangement of their nervous system as is typical of the annelids.
- The high degree of diversity of the annelidan nervous system may seem to weaken the power of the ropeladder-like nervous system to act as an apomorphic characteristic for a taxon comprising Annelida and Arthropoda.
- One widely-mooted suggestion is that planktotrophic larvae, typified by the annelidan trochophore and echinoid pluteus, existed long before the metazoan radiations evident in the Cambrian fossil record.
- Cell lineage analyses, mainly conducted on annelidan. and molluscan embryos, suggested that the ultimate fates of blastomeres are tremendously conserved.
- At first glance, the animals in the annelidan and molluskan groups look like they have little in common.
Definition of annelid in US English: annelidnounˈanəˌlidˈænəˌlɪd Zoology A segmented worm of the phylum Annelida, such as an earthworm or leech. Example sentencesExamples - After examining the opening of these traces, it is tempting to assign their origin to the behavior of vermiform borers such as annelids, sipunculids, or phoronids.
- The annelids include earthworms, polychaete worms, and leeches.
- Most biologists are familiar with only a few of the approximately 40 extant animal phyla such as annelids, arthropods, molluscs, echinoderms and chordates.
- Arthropods, chordates and annelids are the three segmented phyla in the animal kingdom.
- The position and composition of these cells suggests that they are homologous to the gliointerstitial cell system of molluscs, sipunculans, annelids echiurans.
- Silurian ramphoprionid polychaete annelids, represented by their jaws, are described from extensive collections from Gotland, Sweden.
adjectiveˈanəˌlidˈænəˌlɪd Zoology Relating to or denoting annelids. Example sentencesExamples - These differences in expression domains indicate changes in the regulation of these genes somewhere in the annelid lineage.
- When present, the annelid peritoneum either rests directly on the muscle cells or is separated from them by a layer of extracellular matrix.
- If reptiles could develop into birds then annelid worms could develop into insects.
- It is clear that two different hydrophobic motifs are conserved in annelid species.
- These genomes have remarkably similar gene orders to previously published annelid genomes, suggesting that gene order is conserved across annelids.
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