Definition of Platyhelminthes in English:
Platyhelminthes
plural nounˌplatɪhɛlˈmɪnθiːzˌpladēhelˈminTHēz
Zoology A phylum of invertebrates that comprises the flatworms.
Example sentencesExamples
- However, opinions do differ for the scoring of three phyla in particular: Platyhelminthes, Nemertea, and Rotifera (variously scored as primitively possessing or lacking a prototroch).
- The simplest animals that are bilaterally symmetrical and triploblastic (composed of three fundamental cell layers) are the Platyhelminthes, the flatworms.
- For example, both the Nematoda and Platyhelminthes contain obligate parasites as well as free-living species.
- Like other members of the phylum Platyhelminthes, those of the class Turbellaria are dorsoventrally compressed, with high surface area to volume ratios.
- Frontal glands have been cited in the classical literature as probable homologues of Platyhelminthes and nemerteans.
Origin
Modern Latin (plural), from platy- 'flat' + Greek helminth 'worm'.
Definition of Platyhelminthes in US English:
Platyhelminthes
plural nounˌpladēhelˈminTHēz
Zoology A phylum of invertebrates that comprises the flatworms.
Example sentencesExamples
- The simplest animals that are bilaterally symmetrical and triploblastic (composed of three fundamental cell layers) are the Platyhelminthes, the flatworms.
- For example, both the Nematoda and Platyhelminthes contain obligate parasites as well as free-living species.
- Like other members of the phylum Platyhelminthes, those of the class Turbellaria are dorsoventrally compressed, with high surface area to volume ratios.
- However, opinions do differ for the scoring of three phyla in particular: Platyhelminthes, Nemertea, and Rotifera (variously scored as primitively possessing or lacking a prototroch).
- Frontal glands have been cited in the classical literature as probable homologues of Platyhelminthes and nemerteans.
Origin
Modern Latin (plural), from platy- ‘flat’ + Greek helminth ‘worm’.